@article{2806,
author = {Chan, C.Y. and Young, E.C.},
title = {Regular regions for parabolic and elliptic equations},
journal = {Portugaliae mathematica},
volume = {36},
year = {1977},
pages = {7-12},
zbl = {0402.35037},
mrnumber = {0535217},
language = {en},
url = {http://dml.mathdoc.fr/item/2806}
}
Chan, C.Y.; Young, E.C. Regular regions for parabolic and elliptic equations. Portugaliae mathematica, Tome 36 (1977) pp. 7-12. http://gdmltest.u-ga.fr/item/2806/