20121205 presentatie roel willems webanalyse, conversie en cookie trends 2013
Social media en webanalyse - Roel Willems
Advanced Business Dataintegratie Roel Willems
Call tracking rendement telefonische contacten inzichtelijk - roel willems orange valley (slideshare)
Search Marketing Thursday - Google Analytics Summit 2013 recap
Dashboarding - Roel Willems & Twan Lammers gauc 2014
Extracellular nucleoside diphosphate kinase NM23/NDPK modulates normal hematopoietic differentiation