@article{TMF_1974_18_3_a0,
     author = {Yu. M. Pis'mak},
     title = {Proof of the 3-irreducibility of the third {Legendre} transform},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
     pages = {299--309},
     publisher = {mathdoc},
     volume = {18},
     number = {3},
     year = {1974},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TMF_1974_18_3_a0/}
}