[1]ChemicalandPharmaceuticalBulletin,1988,vol.36,p.877-892
[2]Patent:US4942143,1990,A
[1]ChemicalandPharmaceuticalBulletin,1988,vol.36,p.877-892
[2]Patent:US4942143,1990,A
[1]ChemicalandPharmaceuticalBulletin,1988,vol.36,p.877-892
[2]Patent:US4942143,1990,A
[1]ChemicalandPharmaceuticalBulletin,1988,vol.36,p.877-892
[1]ChemicalandPharmaceuticalBulletin,1988,vol.36,p.877-892