gerald j. Gastony, david s. Barrington, david s. Conant. 2002. Obituray: Rolla Milton Tryon, Jr. (1916-2001). 9 pp.
----------------------------, g. Yatskievych. 1989. Chloroplast DNA evolution and phylogeny of some polystichoid ferns. Biochemical Systematics and Ecology 17: 93-101
----------------------------. 1983. Spore Morphology in the Dicksoniaceae: The genera Cystodium, Thyrsopteris, and Culcita. Editor Bot. Soc. of America, 819 pp.
----------------------------. 1979. Spore Morphology in the Cyatheaceae: The genus Trichipteris. Editor Bot. Soc. of America, 23 pp.
----------------------------, j.g. Baroutsis. 1978. Chromosome numbers in the fern genus Anogramma. 2. Amer.Fern J. 65: 71-75
----------------------------. 1973. A revision of the fern genus Nephelea. Contr. Gray Herb. 203: 81-148
----------------------------. 1971. A Revision of the Fern Nephelea. Editor Harvard Univ. 68 pp.
----------------------------. 1969. Sporangial Fragments Referred to Dictophyllum in Triassic Chert from Sarawak. Edición reimpresa. 6 pp.
↑Research Centers Directory: Descriptive listings. Vol. 1 de Research Centers Directory: A Guide to about 13,700 University-related and Other Nonprofit Research Organizations Established on a Permanent Basis and Carrying on Continuing Research Programs. 32ª edición de Gale, 2005ISBN 0-7876-7113-4
↑Contributions from the University of Michigan Herbarium. Vol. 19. Editor Univ. Herbarium, Univ. of Michigan, 1993