@inproceedings{inproceedingsf3790ad6,
title   = {Solvability near the characteristic set for a class of first-order linear partial differential operators},
author = {Cerniauskas, Wanderley A and Dattori da Silva, Paulo Leandro},
year = {2018},
publisher = {ICMC-USP},
booktitle   = {ICMC Summer Meeting on Differential Equations}
}