@article{DAN_1988_303_1_a7,
     author = {V. V. Ponomarev},
     title = {Equipped graphs and their corresponding modular lattices. {Perfect
}},
     journal = {Doklady Akademii Nauk},
     pages = {38--42},
     publisher = {mathdoc},
     volume = {303},
     number = {1},
     year = {1988},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1988_303_1_a7/}
}