1. Covering spaces in representation-theory;Bongartz;Invent. Math.,1981
2. Hereditary and path coalgebras;Chin;Comm. Algebra,2002
3. A brief introduction to coalgebra representation theory;Chin,2004
4. William Chin, Representations of quantum sl(2) at roots of 1, preprint, 2009.
5. Almost split sequences for comodules;Chin;J. Algebra,2002