@article{KYB_1983__19_6_a8,
     author = {Calude, Cristian and Chi\c{t}escu, Ion},
     title = {Representability of recursive {P.} {Martin-L\"of} tests},
     journal = {Kybernetika},
     pages = {526--536},
     publisher = {mathdoc},
     volume = {19},
     number = {6},
     year = {1983},
     mrnumber = {734837},
     zbl = {0529.03021},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/KYB_1983__19_6_a8/}
}