@article{MZM_2006_79_6_a3,
     author = {V. F. Kirichenko and V. A. Levkovets},
     title = {The geometry of $L$-manifolds},
     journal = {Matemati\v{c}eskie zametki},
     pages = {854--869},
     publisher = {mathdoc},
     volume = {79},
     number = {6},
     year = {2006},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2006_79_6_a3/}
}