Heinzeller, T Second-order ocellar neurons in the brain of the honeybee (Apis mellifera). [electronic resource] - Cell and tissue research Aug 1976 - 91-9 p. digital Publication Type: Journal Article ISSN: 0302-766X Standard No.: 10.1007/BF00219702 doi Subjects--Topical Terms: AnimalsBees--ultrastructureInterneurons--ultrastructureVisual Pathways--ultrastructure