Several distinct polycomb complexes regulate and co-localize on the INK4a tumor suppressor locus
PLoS ONE (2009) - Comments
pubmed: 19636380  doi: 10.1371/journal.pone.0006380  issn: 1932-6203 

Goedele N. Maertens, Selma El Messaoudi-Aubert, Tomas Racek, Julie K. Stock, James Nicholls, Marc Rodriguez-Niedenführ, Jesus Gil, Gordon Peters