au.\*:("HEINZEN P")
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CIRCULAR STATISTICS EVALUATING DATA CHANGES OF TWO COUPLED VARIABLES: SYMPATHOMIMETICS IN BRONCHIAL ASTHMAKRAEMER R; HEINZEN P; KLAEY M et al.1982; MOD. PROBL. PAEDIATR.; ISSN 0303-884X; CHE; DA. 1982; VOL. 21; PP. 134-142; BIBL. 20 REF.Article