@article{CMH_1983__58_139947,
     author = {Markus Brodmann},
     title = {Two types of birational models.},
     journal = {Commentarii mathematici Helvetici},
     pages = {388--415},
     publisher = {mathdoc},
     volume = {58},
     year = {1983},
     zbl = {0526.14035},
     url = {http://geodesic.mathdoc.fr/item/CMH_1983__58_139947/}
}