Kooi, B.P., Renardel de Lavalette, G.R, & Verbrugge, L.C (2008). Strong Completeness and Limited Canonicity for PDL. Journal of Logic, Language and Information, 17(1), 69-87.
Renardel de Lavalette, G.R, Kooi, B., & Verbrugge, R (2007). Strong completeness and limited canonicity for PDL. Journal of Logic, Language and Information, 17(1), 69-87.
Kooi, B.P., Renardel de Lavalette, G.R, & Verbrugge, L.C (2006). Hybrid logics with infinitary proof systems. Journal of Logic and Computation, 16(2), 161-175.