@article{1195510145,
author = {Saito, Tomokatsu},
title = {An extension of Sturm's theorem to two dimensions},
journal = {Proc. Japan Acad. Ser. A Math. Sci.},
volume = {73},
number = {10},
year = {1997},
pages = { 18-19},
language = {en},
url = {http://dml.mathdoc.fr/item/1195510145}
}
Saito, Tomokatsu. An extension of Sturm's theorem to two dimensions. Proc. Japan Acad. Ser. A Math. Sci., Tome 73 (1997) no. 10, pp. 18-19. http://gdmltest.u-ga.fr/item/1195510145/