@article{JRAM_1975__276_151606,
     author = {M. Alpseymen},
     title = {A generalization of {Dragilev's} theorem.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {124--129},
     publisher = {mathdoc},
     volume = {276},
     year = {1975},
     zbl = {0313.46009},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1975__276_151606/}
}