BibTeX: 
@article{Linear_ProgrammingAFP,
author = {Julian Parsert and Cezary Kaliszyk},
title = {Linear Programming},
journal = {Archive of Formal Proofs},
month = aug,
year = 2019,
note = {\url{https://isaafp.org/entries/Linear_Programming.html},
Formal proof development},
ISSN = {2150914x},
}
