[1]ChemicalandPharmaceuticalBulletin,1958,vol.6,p.105
[1]ChemicalandPharmaceuticalBulletin,1958,vol.6,p.105
[1]Chemicalandpharmaceuticalbulletin,1958,vol.6,p.105
[1]Chemicalandpharmaceuticalbulletin,1958,vol.6,p.105
[2]Heterocycles,1987,vol.25,p.347-358
[1]Chemicalandpharmaceuticalbulletin,1958,vol.6,p.105
[1]ChemischeBerichte,1972,vol.105,p.748-752
[1]Heterocycles,1987,vol.25,p.347-358