@article{102218, author = {Alois \v Svec}, title = {Spectrum of 2-dimensional manifolds}, journal = {Czechoslovak Mathematical Journal}, volume = {38}, year = {1988}, pages = {237-244}, zbl = {0745.53030}, mrnumber = {946292}, language = {en}, url = {http://dml.mathdoc.fr/item/102218} }
Švec, Alois. Spectrum of 2-dimensional manifolds. Czechoslovak Mathematical Journal, Tome 38 (1988) pp. 237-244. http://gdmltest.u-ga.fr/item/102218/
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