@article{TMF_2018_197_3_a3,
     author = {R. Akbarzadeh},
     title = {The~topology of isoenergetic surfaces for {the~Borisov--Mamaev--Sokolov} integrable case on {the~Lie} algebra $so(3,1)$},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {385--396},
     publisher = {mathdoc},
     volume = {197},
     number = {3},
     year = {2018},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_2018_197_3_a3/}
}