@article{KYB_1976__12_3_a2,
     author = {Bek, Roman},
     title = {Time change of objects and problem of their identification},
     journal = {Kybernetika},
     pages = {--170},
     publisher = {mathdoc},
     volume = {12},
     number = {3},
     year = {1976},
     mrnumber = {0429480},
     zbl = {0345.02004},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/KYB_1976__12_3_a2/}
}