PJM, Folkers; Clore GM. (1989). „Solution structure of recombinant hirudin and the Lys-47-Glu mutant: a nuclear magnetic resonance and hybrid distance geometry-dynamical simulated annealing study”. Biochemistry. 28 (6): 2601—2617. PMID2567183. doi:10.1021/bi00432a038.
Haruyama H. & Wuthrich K. (1989). „Conformation of recombinant desulfatohirudin in aqueous solution determined by nuclear magnetic resonance”. Biochemistry. 28 (10): 4301—4312. PMID2765488. doi:10.1021/bi00436a027.
PJM, Folkers; Clore GM. (1989). „Solution structure of recombinant hirudin and the Lys-47-Glu mutant: a nuclear magnetic resonance and hybrid distance geometry-dynamical simulated annealing study”. Biochemistry. 28 (6): 2601—2617. PMID2567183. doi:10.1021/bi00432a038.
Haruyama H. & Wuthrich K. (1989). „Conformation of recombinant desulfatohirudin in aqueous solution determined by nuclear magnetic resonance”. Biochemistry. 28 (10): 4301—4312. PMID2765488. doi:10.1021/bi00436a027.