1955

• Park & Schuster, R.O. 1955. A new subtribe of pselaphid beetles from California. Chicago Academy of Sciences, Natural History Miscellanea No. 148, 6 pp.

1957

• Schuster, R.O. & Marsh, G.A. 1957. A new genus of Euplectini from California (Coleoptera: Pselaphidae). Pan-Pacific entomologist 33: 149–152. BHL

1958

• Schuster, R.O. & Marsh, G.A. 1958. A new genus of Tychini from California (Coleoptera: Pselaphidae). Pan-Pacific entomologist 34: 125–137.
• Schuster, R.O. & Marsh, G.A. 1958. A study of the North American genus Megarafonus Casey (Coleoptera: Pselaphidae). Pan-Pacific entomologist 34: 187–194.

1962

• Grigarick, A.A. & Schuster, R.O. 1962. Notes on Tychini from western North America (Coleoptera: Pselaphidae). Pan-Pacific entomologist 38: 169–177.

1966

• Grigarick, A.A. & Schuster, R.O. 1966. A new genus of the tribe Euplectini in California (Coleoptera: Pselaphidae). Pan-Pacific entomologist 42: 31–33.

1970

• Grigarick, A.A. & Schuster, R.O. 1970. A new genus in the tribe Euplectini (Coleoptera: Pselaphidae). Pan-Pacific entomologist 46: 36–39.

1976

• Grigarick, A.A. & Schuster, R.O. 1976. A revision of the genus Oropodes Casey (Coleoptera: Pselaphidae). Pan-Pacific entomologist 52: 97–109.

1980

• Grigarick, A.A. & Schuster, R.O. 1980. Discrimination of genera of Euplectini of North and Central America (Coleoptera: Pselaphidae). University of California publications in entomology 87: vi + 56 pp., 79 pls.

• Schuster, R.O., Nelson, D.R., Grigarick, A.A. & Christenberry, D. 1980. Systematic Criteria of the Eutardigrada. Transactions of the American Microscopical Society 99(3): 284–303. Reference page. 
• Schuster, R.O. & Grigarick, A.A. 1980. A new neotropic genus of Pyxidicerini (Coleoptera: Pselaphidae). Entomologica scandinavica 11: 39–40.