Pham Duy Khanh, Marc Lassonde. Quasiconvex Linear Perturbations and Convexity. The American Mathematical Monthly, 123(6):605-608, 2016. [doi]
@article{KhanhL16,
title = {Quasiconvex Linear Perturbations and Convexity},
author = {Pham Duy Khanh and Marc Lassonde},
year = {2016},
url = {https://www.tandfonline.com/doi/abs/10.4169/amer.math.monthly.123.6.605},
researchr = {https://researchr.org/publication/KhanhL16},
cites = {0},
citedby = {0},
journal = {The American Mathematical Monthly},
volume = {123},
number = {6},
pages = {605-608},
}