@article{TMF_1974_20_2_a4,
     author = {A. N. Vasil'ev and A. K. Kazanskii and Yu. M. Pis'mak},
     title = {Diagrammatic analysis of the fourth {Legendre} transform},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {181--193},
     publisher = {mathdoc},
     volume = {20},
     number = {2},
     year = {1974},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1974_20_2_a4/}
}