Published in Carnivorous plant newsletter, in 1977, in volume 6, issue 1, pages 11-12

Published in Carnivorous plant newsletter, in 1977, in volume 6, issue 3, pages 49-50

Published in Carnivorous plant newsletter, in 1977, in volume 6, issue 3, pages 51-55

Published in Carnivorous plant newsletter, in 1977, in volume 6, issue 3, pages 57-58

Published in Carnivorous plant newsletter, in 1977, in volume 6, issue 3, pages 58-59

Published in Carnivorous plant newsletter, in 1977, in volume 6, issue 4, pages 68-69

Published in Carnivorous plant newsletter, in 1977, in volume 6, issue 4, pages 70-71

Published in Carnivorous plant newsletter, in 1977, in volume 6, issue 4, pages 72-73