@article{KYB_2013_49_2_a1,
     author = {Holub, \v{S}t\v{e}p\'an and Matocha, Vojt\v{e}ch},
     title = {Complexity of testing morphic primitivity},
     journal = {Kybernetika},
     pages = {216--223},
     year = {2013},
     volume = {49},
     number = {2},
     mrnumber = {3085393},
     zbl = {1266.68150},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/KYB_2013_49_2_a1/}
}