@article{ASENS_2005_4_38_2_193_0,
     author = {Geiss, Christof and Leclerc, Bernard and Schr\"oer, Jan},
     title = {Semicanonical bases and preprojective algebras},
     journal = {Annales scientifiques de l'\'Ecole Normale Sup\'erieure},
     pages = {193--253},
     publisher = {Elsevier},
     volume = {Ser. 4, 38},
     number = {2},
     year = {2005},
     doi = {10.1016/j.ansens.2004.12.001},
     mrnumber = {2144987},
     zbl = {02211345},
     language = {en},
     url = {http://www.numdam.org/articles/10.1016/j.ansens.2004.12.001/}
}