Valterová, I., Hovorka, O., Urbanová, K. Premating Behaviour of .I.Bombus Confusus./I. Males and Analysis of Their Labial Gland Secretion. In: Chemical Communication in Vertebrates and Invertebrates: Evolution, Function and Perception of Communication Substances and Evoked Responses. La LondelesMaures, 1997, s. 117-118.