@article{JSFU_2011_4_4_a7,
     author = {Olga V. Kravtsova and Victoria O. Pramzina},
     title = {On collineation subgroup of semifield plane that isomorphic to $A_4$},
     journal = {\v{Z}urnal Sibirskogo federalʹnogo universiteta. Matematika i fizika},
     pages = {498--504},
     publisher = {mathdoc},
     volume = {4},
     number = {4},
     year = {2011},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/JSFU_2011_4_4_a7/}
}