Published in Bollettino Malacologico, in 1983, in volume 19, pages 141-144

Published in Bollettino Malacologico, in 1983, in volume 19, issue 5-8, pages 121-126

Published in Bollettino Malacologico, in 1983, in volume 19, issue 5-8, pages 169-170

Published in Bollettino Malacologico, in 1983, in volume 19, issue 9-12, pages 237-244