M. Schindler

Monitoring agricultural ecosystems by using wild bees as environmental indicators

Olaf Diestelhorst, S. Haertel, C. Saure, 2013 .

Diversity of bees (Hymenoptera, Apiformes) in extensive orchards in the highlands of Jordan

D. Wittmann, S. Zaitoun, Abdul-Majed Al-Ghzawi, 2006 .

Courtship behaviour in the genus Nomada – antennal grabbing and possible transfer of male secretions

D. Wittmann, S. Renner, M. Hofmann, 2018, Journal of Hymenoptera Research.