Proskauer, Johannes (1951). „Studies on Athocerotales. III.”. Bulletin of the Torrey Botanical Club78 (4), 331–349. o. DOI:10.2307/2481996. JSTOR2481996.
jstor.org
Proskauer, Johannes (1951). „Studies on Athocerotales. III.”. Bulletin of the Torrey Botanical Club78 (4), 331–349. o. DOI:10.2307/2481996. JSTOR2481996.