Published in Malacologia, in 1993, in volume 35, pages 141-151

Published in Malacologia, in 1993, in volume 35, pages 261-313

Published in Malacologia, in 1993, in volume 35, issue 1, pages 153-154

Published in Malacologia, in 1993, in volume 35, issue 2, pages 155-259

Published in Malacologia, in 1993, in volume 35, issue 2, pages 343-349

Published in Malacologia, in 1993, in volume 35, issue 2, pages 351-359

Published in Malacologia, in 1993, in volume 35, issue 2, pages 407-410