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AN UNAMBIGUOUS SYNTHESIS OF PYRAZOLES BY SULPHUR EXTRUSION FROM 1,2,6-THIADIAZINESBARLUENGA J; LOPEZ ORTIZ JF; TOMAS M et al.1981; PERKIN TRANS. 1; ISSN 0300-922X; GBR; DA. 1981; NO 7; PP. 1891-1895; BIBL. 19 REF.Article