Wyckoff, HW; KD, Hardman; Allewell, NM; Inagami, T; Johnson, LN; Richards FM (1967). „The structure of ribonuclease-S at 3.5 Å resolution”. J. Biol. Chem. 242 (17): 3984—8. PMID6037556. doi:10.1016/S0021-9258(18)95844-8.
Wyckoff, HW; KD, Hardman; Allewell, NM; Inagami, T; Johnson, LN; Richards FM (1967). „The structure of ribonuclease-S at 3.5 Å resolution”. J. Biol. Chem. 242 (17): 3984—8. PMID6037556. doi:10.1016/S0021-9258(18)95844-8.