website: Update gem5 reference for gem5-20

This change also adds a bibtex file to make it easier to cite gem5-20.

Signed-off-by: Jason Lowe-Power <jason@lowepower.com>
Change-Id: Ic2204c4fb5a6a6c2fb65955fb8f4e6dbd5e1d098
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5-website/+/51267
Reviewed-by: Bobby R. Bruce <bbruce@ucdavis.edu>
Maintainer: Bobby R. Bruce <bbruce@ucdavis.edu>
Tested-by: Bobby R. Bruce <bbruce@ucdavis.edu>
diff --git a/_pages/getting_started.md b/_pages/getting_started.md
index 46e7d0e..d7270d6 100644
--- a/_pages/getting_started.md
+++ b/_pages/getting_started.md
@@ -79,7 +79,16 @@
 
 ### How should I cite gem5?
 
-You should always cite the [gem5 paper](http://dx.doi.org/10.1145/2024716.2024718).
+You should cite the [gem5-20 paper](https://arxiv.org/abs/2007.03152).
+
+```
+The gem5 Simulator: Version 20.0+. Jason Lowe-Power, Abdul Mutaal Ahmad, Ayaz Akram, Mohammad Alian, Rico Amslinger, Matteo Andreozzi, Adrià Armejach, Nils Asmussen, Brad Beckmann, Srikant Bharadwaj, Gabe Black, Gedare Bloom, Bobby R. Bruce, Daniel Rodrigues Carvalho, Jeronimo Castrillon, Lizhong Chen, Nicolas Derumigny, Stephan Diestelhorst, Wendy Elsasser, Carlos Escuin, Marjan Fariborz, Amin Farmahini-Farahani, Pouya Fotouhi, Ryan Gambord, Jayneel Gandhi, Dibakar Gope, Thomas Grass, Anthony Gutierrez, Bagus Hanindhito, Andreas Hansson, Swapnil Haria, Austin Harris, Timothy Hayes, Adrian Herrera, Matthew Horsnell, Syed Ali Raza Jafri, Radhika Jagtap, Hanhwi Jang, Reiley Jeyapaul, Timothy M. Jones, Matthias Jung, Subash Kannoth, Hamidreza Khaleghzadeh, Yuetsu Kodama, Tushar Krishna, Tommaso Marinelli, Christian Menard, Andrea Mondelli, Miquel Moreto, Tiago Mück, Omar Naji, Krishnendra Nathella, Hoa Nguyen, Nikos Nikoleris, Lena E. Olson, Marc Orr, Binh Pham, Pablo Prieto, Trivikram Reddy, Alec Roelke, Mahyar Samani, Andreas Sandberg, Javier Setoain, Boris Shingarov, Matthew D. Sinclair, Tuan Ta, Rahul Thakur, Giacomo Travaglini, Michael Upton, Nilay Vaish, Ilias Vougioukas, William Wang, Zhengrong Wang, Norbert Wehn, Christian Weis, David A. Wood, Hongil Yoon, Éder F. Zulian. ArXiv Preprint ArXiv:2007.03152, 2021.
+
+```
+
+[Download the .bib file.](/assets/files/gem5-20.bib)
+
+You may also cite the [original gem5 paper](http://dx.doi.org/10.1145/2024716.2024718).
 
 ```
 The gem5 Simulator. Nathan Binkert, Bradford Beckmann, Gabriel Black, Steven K. Reinhardt, Ali Saidi, Arkaprava Basu, Joel Hestness, Derek R. Hower, Tushar Krishna, Somayeh Sardashti, Rathijit Sen, Korey Sewell, Muhammad Shoaib, Nilay Vaish, Mark D. Hill, and David A. Wood. May 2011, ACM SIGARCH Computer Architecture News.
@@ -93,7 +102,7 @@
 
 ### How should I refer to gem5?
 
-"gem5" should *always* have a lowercase "g". 
+"gem5" should *always* have a lowercase "g".
 If it makes you uncomfortable beginning a sentence with a lowercase letter or your editor requires a capital letter, you can instead refer to gem5 as "The gem5 Simulator".
 
 ### Can I use the gem5 logo?
diff --git a/assets/files/gem5-20.bib b/assets/files/gem5-20.bib
new file mode 100644
index 0000000..57b86c4
--- /dev/null
+++ b/assets/files/gem5-20.bib
@@ -0,0 +1,86 @@
+@article{DBLP:journals/corr/abs-2007-03152,
+  author    = {Jason Lowe{-}Power and
+               Abdul Mutaal Ahmad and
+               Ayaz Akram and
+               Mohammad Alian and
+               Rico Amslinger and
+               Matteo Andreozzi and
+               Adri{\`{a}} Armejach and
+               Nils Asmussen and
+               Srikant Bharadwaj and
+               Gabe Black and
+               Gedare Bloom and
+               Bobby R. Bruce and
+               Daniel Rodrigues Carvalho and
+               Jer{\'{o}}nimo Castrill{\'{o}}n and
+               Lizhong Chen and
+               Nicolas Derumigny and
+               Stephan Diestelhorst and
+               Wendy Elsasser and
+               Marjan Fariborz and
+               Amin Farmahini Farahani and
+               Pouya Fotouhi and
+               Ryan Gambord and
+               Jayneel Gandhi and
+               Dibakar Gope and
+               Thomas Grass and
+               Bagus Hanindhito and
+               Andreas Hansson and
+               Swapnil Haria and
+               Austin Harris and
+               Timothy Hayes and
+               Adrian Herrera and
+               Matthew Horsnell and
+               Syed Ali Raza Jafri and
+               Radhika Jagtap and
+               Hanhwi Jang and
+               Reiley Jeyapaul and
+               Timothy M. Jones and
+               Matthias Jung and
+               Subash Kannoth and
+               Hamidreza Khaleghzadeh and
+               Yuetsu Kodama and
+               Tushar Krishna and
+               Tommaso Marinelli and
+               Christian Menard and
+               Andrea Mondelli and
+               Tiago M{\"{u}}ck and
+               Omar Naji and
+               Krishnendra Nathella and
+               Hoa Nguyen and
+               Nikos Nikoleris and
+               Lena E. Olson and
+               Marc S. Orr and
+               Binh Pham and
+               Pablo Prieto and
+               Trivikram Reddy and
+               Alec Roelke and
+               Mahyar Samani and
+               Andreas Sandberg and
+               Javier Setoain and
+               Boris Shingarov and
+               Matthew D. Sinclair and
+               Tuan Ta and
+               Rahul Thakur and
+               Giacomo Travaglini and
+               Michael Upton and
+               Nilay Vaish and
+               Ilias Vougioukas and
+               Zhengrong Wang and
+               Norbert Wehn and
+               Christian Weis and
+               David A. Wood and
+               Hongil Yoon and
+               {\'{E}}der F. Zulian},
+  title     = {The gem5 Simulator: Version 20.0+},
+  journal   = {CoRR},
+  volume    = {abs/2007.03152},
+  year      = {2020},
+  url       = {https://arxiv.org/abs/2007.03152},
+  eprinttype = {arXiv},
+  eprint    = {2007.03152},
+  timestamp = {Thu, 23 Sep 2021 09:45:13 +0200},
+  biburl    = {https://dblp.org/rec/journals/corr/abs-2007-03152.bib},
+  bibsource = {dblp computer science bibliography, https://dblp.org}
+}
+