@article{TMF_2013_177_1_a6,
     author = {S. A. Duplij and A. T. Kotvitskii},
     title = {Generalized interaction in multigravity},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {137--150},
     year = {2013},
     volume = {177},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_2013_177_1_a6/}
}