@article {MR2811563,
	title = {Singular blocks of parabolic category $\scr O$ and finite W-algebras},
	journal = {J. Pure Appl. Algebra},
	volume = {215},
	number = {12},
	year = {2011},
	pages = {2797{\textendash}2804},
	issn = {0022-4049},
	doi = {10.1016/j.jpaa.2011.03.020},
	url = {http://dx.doi.org/10.1016/j.jpaa.2011.03.020},
	author = {Webster, Ben}
}
