@article{TMF_1991_89_1_a10,
     author = {F. A. Lunev},
     title = {Field-theory models that admit alternative {Lagrangian} {formulations.~I}},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {121--131},
     year = {1991},
     volume = {89},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1991_89_1_a10/}
}