Authors: Koedam, D Velthuis, HHW Dohmen, MR Imperatriz-Fonseca, VL

Citation: D. Koedam et al., The behaviour of laying workers and the morphology and viability of their eggs in Melipona bicolor bicolor, PHYSL ENTOM, 26(3), 2001, pp. 254-259

Authors: Ribeiro, MF Velthuis, HHW Duchateau, MJ van der Tweel, I

Citation: Mf. Ribeiro et al., Feeding frequency and caste differentiation in Bombus terrestris larvae, INSECT SOC, 46(4), 1999, pp. 306-314

Authors: Hogendoorn, K Velthuis, HHW

Citation: K. Hogendoorn et Hhw. Velthuis, Task allocation and reproductive skew in social mass provisioning carpenter bees in relation to age and size, INSECT SOC, 46(3), 1999, pp. 198-207

Authors: Alonso, WJ Lucena, T Fracasso, CM Velthuis, HHW Imperatriz-Fonseca, VL

Citation: Wj. Alonso et al., Do Melipona bicolor (Apidae, Meliponinae) workers distinguish relatedness among different physogastric queens?, APIDOLOGIE, 29(6), 1998, pp. 503-512

Authors: Kraus, B Velthuis, HHW Tingek, S

Citation: B. Kraus et al., Temperature profiles of the brood nests of Apis cerana and Apis mellifera colonies and their relation to varroosis, J APICULT R, 37(3), 1998, pp. 175-181