Crawley-Boevey, W.W. & Hubery, A. (2020). A New Approach to Simple Modules for Preprojective Algebras. ALGEBRAS AND REPRESENTATION THEORY, 23(4), 1849-1860. Springer. doi:10.1007/s10468-019-09916-1.
Hubery, A. & Krause, H. (2016). A categorification of non-crossing partitions. Journal of the European Mathematical Socitey, 18(10), 2273-2313. European Mathematical Soc. doi:10.4171/JEMS/641.