[1]Bachmann;Cronyn[ChemistryofPenicillin]
[2]Sidky,M.M.;El-Kateb,A.A.;Mahran,M.R.;Hennawy,I.T.;El-Malek,H.A.Abd[PhosphorusandSulfurandtheRelatedElements,1987,vol.29,p.11-16]
[1]Bachmann;Cronyn[ChemistryofPenicillin]
[2]Jose,C.I.;Pabrai,P.R.[IndianJournalofChemistry,1969,vol.7,p.594-598]
[1]Bachmann;Cronyn[ChemistryofPenicillin]
[1]Akteries,Bernhard;Jochims,JohannesC.[ChemischeBerichte,1986,vol.119,#2,p.669-682]
[1]Selvi,Srinivasan;Perumal,ParamasivanT.[TetrahedronLetters,1997,vol.38,#35,p.6263-6266]