@article{MM2_1981__36_154818,
     author = {Otto Bretscher and C. L\"aser},
     title = {Selfinjective and {Simply} {Connected} {Algebras.}},
     journal = {Manuscripta mathematica},
     pages = {253--308},
     year = {1981},
     volume = {36},
     zbl = {0478.16024},
     url = {http://geodesic.mathdoc.fr/item/MM2_1981__36_154818/}
}