2019
2018
Ritter 2018 Facts about Wax. Part 4: Uses of beeswax. Bees for Development Journal 129.
Ritter 2018 Facts about Wax. Part 3: Quality of beeswax. Bees for Development Journal 128.
Ritter 2018 Facts about Wax. Part 2: Comb and foundation. Bees for Development Journal 127.
Ritter 2018 Facts about Wax. Part 1: Beeswax in apiculture. Bees for Development Journal 126.
2017
Ritter 2017 Fakten über Wachs. Bienen&Natur Oktober, p.10-17.
2016