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