@article{DAN_1989_304_6_a4,
     author = {V. V. Trofimov},
     title = {Symplectic connections, the {Maslov} index and a conjecture of},
     journal = {Doklady Akademii Nauk},
     pages = {1302--1305},
     publisher = {mathdoc},
     volume = {304},
     number = {6},
     year = {1989},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1989_304_6_a4/}
}