@article{MASLO_1983__33_1_a14,
     author = {Kelemenov\'a, Alica},
     title = {Levels in {L-systems}},
     journal = {Mathematica slovaca},
     pages = {87--97},
     publisher = {mathdoc},
     volume = {33},
     number = {1},
     year = {1983},
     mrnumber = {689284},
     zbl = {0539.68044},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/MASLO_1983__33_1_a14/}
}