[1]ChemicalandPharmaceuticalBulletin,1982,vol.30,p.2417-2420
[1]ChemicalandPharmaceuticalBulletin,1989,vol.37,p.2933-2936
[1]Chemicalandpharmaceuticalbulletin,1989,vol.37,p.2814-2816
[1]Chemicalandpharmaceuticalbulletin,1989,vol.37,p.2814-2816
[1]ChemicalandPharmaceuticalBulletin,1989,vol.37,p.2933-2936