[1]Eichenbergeretal.[HelveticaChimicaActa,1956,vol.39,p.1755,1762]
[1]Kuraishi[PharmaceuticalBulletin,1937,vol.5,p.376,378]
[1]Eichenbergeretal.[HelveticaChimicaActa,1956,vol.39,p.1755,1762]
[1]Thomas;Marxer[HelveticaChimicaActa,1958,vol.41,p.1898,1902]