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@article{PIM_1963_N_S_03_17_a16, author = {Dragomir \v{Z}. {\DJ}okovi\'c}, title = {A {Theorem} {On} {Semigroups} {Of} {Linear} {Operators}}, journal = {Publications de l'Institut Math\'ematique}, pages = {129 }, publisher = {mathdoc}, volume = {_N_S_03}, number = {17}, year = {1963}, url = {http://geodesic.mathdoc.fr/item/PIM_1963_N_S_03_17_a16/} }
Dragomir Ž. Đoković. A Theorem On Semigroups Of Linear Operators. Publications de l'Institut Mathématique, _N_S_03 (1963) no. 17, p. 129 . http://geodesic.mathdoc.fr/item/PIM_1963_N_S_03_17_a16/