@article{CTGDC_2000__41_2_143_0,
     author = {Schr\"oder, Lutz},
     title = {Isomorphisms and splitting of idempotents in semicategories},
     journal = {Cahiers de Topologie et G\'eom\'etrie Diff\'erentielle Cat\'egoriques},
     pages = {143--153},
     publisher = {Dunod \'editeur, publi\'e avec le concours du CNRS},
     volume = {41},
     number = {2},
     year = {2000},
     mrnumber = {1769341},
     zbl = {0955.18002},
     language = {en},
     url = {http://www.numdam.org/item/CTGDC_2000__41_2_143_0/}
}