@article{CMUC_1965_6_3_a0,
     author = {Gruska, Jozef},
     title = {Structural unambiguity of  {ALGOL} {MOD}},
     journal = {Commentationes Mathematicae Universitatis Carolinae},
     pages = {281--327},
     year = {1965},
     volume = {6},
     number = {3},
     mrnumber = {0207487},
     zbl = {0139.00802},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMUC_1965_6_3_a0/}
}