Published in Bulletin of The African Bird Club, in 2007, in volume 14, issue 2, pages 193-199

Created: 2021-02-23, modified: 2021-02-23

Published in Revue Suisse de Zoologie, in 2014, in volume 121, issue 3, pages 293-317

Created: 2017-03-19, modified: 2017-03-19