Published in Carnivorous plant newsletter, in 1980, in volume 9, issue 2, pages 37-38

Published in Carnivorous plant newsletter, in 1980, in volume 9, issue 2, pages 41-44

Published in Carnivorous plant newsletter, in 1980, in volume 9, issue 2, pages 44-45

Published in Carnivorous plant newsletter, in 1980, in volume 9, issue 2, pages 48-49

Published in Carnivorous plant newsletter, in 1980, in volume 9, issue 3, pages 63-64

Published in Carnivorous plant newsletter, in 1980, in volume 9, issue 3, pages 66-68

Published in Carnivorous plant newsletter, in 1980, in volume 9, issue 3, pages 69-70

Published in Carnivorous plant newsletter, in 1980, in volume 9, issue 3, pages 79-81

Published in Carnivorous plant newsletter, in 1980, in volume 9, issue 4, pages 98-99