@article{PIM_1970_N_S_10_24_a3,
     author = {Du\v{s}anka {\DJ}oki\'c-Ristanovi\'c and {\DJ}or{\dj}e Mu\v{s}icki},
     title = {Transformations {Canoniques} {Des} {Syst\`emes} {D\'eg\'en\'er\'es}},
     journal = {Publications de l'Institut Math\'ematique},
     pages = {25 },
     publisher = {mathdoc},
     volume = {_N_S_10},
     number = {24},
     year = {1970},
     url = {http://geodesic.mathdoc.fr/item/PIM_1970_N_S_10_24_a3/}
}