O von Helversen

Object recognition by echolocation: a nectar-feeding bat exploiting the flowers of a rain forest vine.

D von Helversen, O von Helversen, 2003, Journal of comparative physiology. A, Neuroethology, sensory, neural, and behavioral physiology.

The cost of hovering and forward flight in a nectar-feeding bat, Glossophaga soricina, estimated from aerodynamic theory.

T. Kunz, O. von Helversen, Y. Winter, 1993, The Journal of experimental biology.