Apidologie

Valterova, Irena; Urbanova, Klara; Rasmont, Pierre; Terzo, Michael, Intra and interspecific variability of the cephalic labial glands' secretions in male bumblebees: The case of Bombus (Thoracobombus) ruderarius and B. (Thoracobombus) sylvarum [Hymenoptera, Apidae]. Apidologie 2005, 36(1), 85 - 96, 10.1051/apido:2004072 .