@article{DAN_1957_115_4_a5,
     author = {V. G. Lemlein},
     title = {Spaces of symmetric almost symplectic connectivity},
     journal = {Doklady Akademii Nauk},
     pages = {655--658},
     publisher = {mathdoc},
     volume = {115},
     number = {4},
     year = {1957},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1957_115_4_a5/}
}