Age-related patterns of volatile cephalic constituents in queens of the neotropical stingless bee Scaptotrigona postica Latr (Hymenoptera, Apidae) E. Engels, W. Engels, G. Lübke, W. Schröder and W. FranckeApidologie, 24 6 (1993) 539-548DOI: https://doi.org/10.1051/apido:19930601
