Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{PORMA_1977__36_1_115296, author = {Chan, C.Y. and Young, E.C.}, title = {Regular regions for parabolic and elliptic equations}, journal = {Portugaliae mathematica}, pages = {7--12}, publisher = {mathdoc}, volume = {36}, number = {1}, year = {1977}, mrnumber = {0535217}, zbl = {0402.35037}, language = {en}, url = {http://geodesic.mathdoc.fr/item/PORMA_1977__36_1_115296/} }
Chan, C.Y.; Young, E.C. Regular regions for parabolic and elliptic equations. Portugaliae mathematica, Tome 36 (1977) no. 1, pp. 7-12. http://geodesic.mathdoc.fr/item/PORMA_1977__36_1_115296/