Theme: an environment for building formal kads-II models of expertise / J.R. Balder, J.M. AkkermansExperience with commonkads for reverse knowledge engineering / J. Balder, N. Vilatte, M. BannelierInvestigation of thermal neutron capture in 23Na, 138Ba, 140Ce and 142Ce / [by] Jozua Richard BalderInvestigation of thermal neutron capture in 23Na, 138Ba, 140Ce and 142Ce / by J.R. Balder