Kawabata K, Suzuki M, Sugitani M, Imaki K, Toda M, Miyamoto T (June 1991). "ONO-5046, a novel inhibitor of human neutrophil elastase". Biochemical and Biophysical Research Communications. 177 (2): 814–820. Bibcode:1991BBRC..177..814K. doi:10.1016/0006-291X(91)91862-7. PMID2049103.
Kawabata K, Suzuki M, Sugitani M, Imaki K, Toda M, Miyamoto T (June 1991). "ONO-5046, a novel inhibitor of human neutrophil elastase". Biochemical and Biophysical Research Communications. 177 (2): 814–820. Bibcode:1991BBRC..177..814K. doi:10.1016/0006-291X(91)91862-7. PMID2049103.
Kawabata K, Suzuki M, Sugitani M, Imaki K, Toda M, Miyamoto T (June 1991). "ONO-5046, a novel inhibitor of human neutrophil elastase". Biochemical and Biophysical Research Communications. 177 (2): 814–820. Bibcode:1991BBRC..177..814K. doi:10.1016/0006-291X(91)91862-7. PMID2049103.
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US 5017610, Imaki K, Arai Y, Okegawa T, "Derivatives of p-substituted phenyl ester of pivalic acid", issued 21 May 1991, assigned to Ono Pharmaceutical Co Ltd