. . . . . . . . . "scientific article published on 01 August 1999"@en . . . "Selective spectrofluorimetric determination of phenolic beta-lactam antibiotics through the formation of their coumarin derivatives"@en . "643-653" . . . . . "E F Khamis" . . . . "Selective spectrofluorimetric determination of phenolic beta-lactam antibiotics through the formation of their coumarin derivatives"@nl . . "wetenschappelijk artikel"@nl . . "10.1016/S0731-7085(99)00017-5" . "1999-08-01T00:00:00Z"^^ . . . . . . . . . . . "Selective spectrofluorimetric determination of phenolic beta-lactam antibiotics through the formation of their coumarin derivatives"@en . . "art\u00EDculu cient\u00EDficu espubliz\u00E1u n'agostu de 1999"@ast . "S F Belal" . . . . . "im August 1999 ver\u00F6ffentlichter wissenschaftlicher Artikel"@de . . . . . "4" . . . "Selective spectrofluorimetric determination of phenolic beta-lactam antibiotics through the formation of their coumarin derivatives"@nl . . . "A F El Walily" . "Selective spectrofluorimetric determination of phenolic beta-lactam antibiotics through the formation of their coumarin derivatives"@en . "20" . . . . . . . "\u043D\u0430\u0443\u043A\u043E\u0432\u0430 \u0441\u0442\u0430\u0442\u0442\u044F, \u043E\u043F\u0443\u0431\u043B\u0456\u043A\u043E\u0432\u0430\u043D\u0430 \u0432 \u0441\u0435\u0440\u043F\u043D\u0456 1999"@uk . "Selective spectrofluorimetric determination of phenolic beta-lactam antibiotics through the formation of their coumarin derivatives"@en . "10704133" . "Selective spectrofluorimetric determination of phenolic beta-lactam antibiotics through the formation of their coumarin derivatives"@nl . "A A Gazy" . .