@article{PUIM_1963__3(17)_23_258407,
     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 = {3(17)},
     number = {23},
     year = {1963},
     zbl = {0122.35204},
     language = {en},
     url = {https://geodesic-test.mathdoc.fr/item/PUIM_1963__3(17)_23_258407/}
}