@article{10_21136_CMJ_1965_100682,
     author = {Nagy, Jozef},
     title = {Kronecker index in abstract dynamical systems, {I}},
     journal = {Czechoslovak Mathematical Journal},
     pages = {394--405},
     publisher = {mathdoc},
     volume = {15},
     number = {3},
     year = {1965},
     doi = {10.21136/CMJ.1965.100682},
     mrnumber = {0179774},
     zbl = {0135.22903},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1965.100682/}
}