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- [31] Studies on anti-MRSA parenteral cephalosporins -: I.: Synthesis and antibacterial activity of 7β-[2-(5-amino-1,2,4-thiadiazol-3-yl)-2(Z)-hydroxyiminoacetamido]-3-(substituted imidazo[1,2-b]-pyridazinium-1-yl)methyl-3-cephem-4-carboxylates and related compounds JOURNAL OF ANTIBIOTICS, 2000, 53 (10) : 1053 - 1070