Published in Bollettino Malacologico, in 1987, in volume 23, pages 123-206

Published in Bollettino Malacologico, in 1987, in volume 23, pages 311-314

Published in Bollettino Malacologico, in 1987, in volume 23, pages 401-412

Published in Bollettino Malacologico, in 1987, in volume 23, issue 1-4, pages 1-34

Published in Bollettino Malacologico, in 1987, in volume 23, issue 1-4, pages 35-46

Published in Bollettino Malacologico, in 1987, in volume 23, issue 1-4, pages 53-68

Published in Bollettino Malacologico, in 1987, in volume 23, issue 5-8, pages 207-222

Published in Bollettino Malacologico, in 1987, in volume 23, issue 5-8, pages 269-273

Published in Bollettino Malacologico, in 1987, in volume 23, issue 11-12, pages 327-380

Published in Bollettino Malacologico, in 1987, in volume 23, issue 11-12, pages 413-416

Published in Bollettino Malacologico, in 1987, in volume 23, issue 9-10, pages 297-303