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@article{FAA_1970_4_4_a3, author = {G. I. Laptev}, title = {Operational calculus of linear unbounded operators and semigroups}, journal = {Funkcionalʹnyj analiz i ego prilo\v{z}eni\^a}, pages = {31--40}, publisher = {mathdoc}, volume = {4}, number = {4}, year = {1970}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/FAA_1970_4_4_a3/} }
G. I. Laptev. Operational calculus of linear unbounded operators and semigroups. Funkcionalʹnyj analiz i ego priloženiâ, Tome 4 (1970) no. 4, pp. 31-40. http://geodesic.mathdoc.fr/item/FAA_1970_4_4_a3/