http://sundials.wikidot.com/bdf-method

http://www.daetools.com/index.html

https://m.blog.naver.com/PostView.nhn?blogId=jey_lee&logNo=220533491032&proxyReferer=http:%2F%2Fs.ppomppu.co.kr%2F%3Fidno%3Dandroidtab_104811%26target%3DaHR0cDovL20uYmxvZy5uYXZlci5jb20vamV5X2xlZS8yMjA1MzM0OTEwMzI%5C%3D%26encode%3Don

https://news.hmgjournal.com/Group-Story/%ED%9B%A8%EC%94%AC-%EB%8D%94-%EA%B0%95%EB%A0%A5%ED%95%B4%EC%A7%84-%ED%98%84%EB%8C%80-%EA%B8%B0%EC%95%84%EC%9E%90%EB%8F%99%EC%B0%A8%EC%9D%98-%EA%B5%AC%EB%8F%85%EC%84%9C%EB%B9%84%EC%8A%A4

https://www.google.com/search?ie=UTF-8&client=ms-android-samsung-ss&source=android-browser&q=wiebe+combustion+model+github

https://www.researchgate.net/publication/299604992_Contact_Force_Models_for_Multibody_Dynamics

http://www.kves.uniza.sk/kvesnew/dokumenty/DREP/Filters/SecondOrderFilters.pdf

https://www.pdx.edu/nanogroup/sites/www.pdx.edu.nanogroup/files/NOTES_Transfer function Laplace Transormation Active filter_0.pdf

https://lpsa.swarthmore.edu/Representations/SysRepTransformations/TF2SS.html