Published in Bollettino Malacologico, in 1988, in volume 24, pages 101-111

Published in Bollettino Malacologico, in 1988, in volume 24, pages 115-132

Published in Bollettino Malacologico, in 1988, in volume 24, issue 1-4, pages 27-32

Published in Bollettino Malacologico, in 1988, in volume 24, issue 1-4, pages 61-65

Published in Bollettino Malacologico, in 1988, in volume 24, issue 1-4, pages 66-70

Published in Bollettino Malacologico, in 1988, in volume 24, issue 5-8, pages 73-100

Published in Bollettino Malacologico, in 1988, in volume 24, issue 5-8, pages 141-144

Published in Bollettino Malacologico, in 1988, in volume 24, issue 9-12, pages 205-214

Published in Bollettino Malacologico, in 1988, in volume 24, issue 9-12, pages 243-260