Published in Gayana Zoologia, in 1990, in volume 54, pages 13-19

Published in Gayana Zoologia, in 1990, in volume 54, pages 67-78

Published in Gayana Zoologia, in 1990, in volume 54, pages 135-142

Published in Gayana Zoologia, in 1990, in volume 54, issue 3-4, pages 87-116