@article{MZ_1980__173_172976,
     author = {Johannes Huebschmann},
     title = {The {Homotype} {Type} of a {Combinatorially} {Aspherical} {Presentation.}},
     journal = {Mathematische Zeitschrift},
     pages = {163--170},
     publisher = {mathdoc},
     volume = {173},
     year = {1980},
     zbl = {0421.55004},
     url = {http://geodesic.mathdoc.fr/item/MZ_1980__173_172976/}
}