Published in Zitteliana, in 1993, in volume 20, pages 179-211

Created: 2017-11-06, modified: 2017-11-06

Published in The Beagle, in 1983, in volume 1, pages 115-122

Created: 2018-02-25, modified: 2018-02-25

Published in Special Publications Museum of Texas Tech University, in 2014, in volume 63, pages 1-69

Created: 2017-12-17, modified: 2017-12-17

Published in Sitzungsberichte der Akademie der Wissenschaften mathematisch-naturwissenschaftliche Klasse, in 1900, in volume 109, pages 71-86

Created: 2017-04-24, modified: 2017-04-24