@article{10_21136_AM_1969_103256,
     author = {Dole\v{z}al, V\'aclav},
     title = {O neline\'arn{\'\i}ch zp\v{e}tnovazebn{\'\i}ch syst\'emech},
     journal = {Applications of Mathematics},
     pages = {497--515},
     publisher = {mathdoc},
     volume = {14},
     number = {6},
     year = {1969},
     doi = {10.21136/AM.1969.103256},
     mrnumber = {0247899},
     zbl = {0206.16403},
     language = {cz},
     url = {http://geodesic.mathdoc.fr/articles/10.21136/AM.1969.103256/}
}