Willem Blok's Contribution to Abstract Algebraic Logic.

Ramon Jansana Willem Blok's Contribution to Abstract Algebraic Logic. 31-48 2006 83 Studia Logica 1-3 http://dx.doi.org/10.1007/s11225-006-8297-1 db/journals/sLogica/sLogica83.html#Jansana06