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@article{MAT_1974_18_1_a1, author = {I. M. Singer}, title = {Future extensions of index theory and elliptic operators}, journal = {Matematika}, pages = {52--61}, publisher = {mathdoc}, volume = {18}, number = {1}, year = {1974}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MAT_1974_18_1_a1/} }
I. M. Singer. Future extensions of index theory and elliptic operators. Matematika, Tome 18 (1974) no. 1, pp. 52-61. http://geodesic.mathdoc.fr/item/MAT_1974_18_1_a1/