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ON THE OSCILLATION OF SOLUTIONS OF Y(2N)+BY'+A1(T)Y=O,B<0MAMRILLA J.1982; MATH. SLOV.; ISSN 0139-9918; CSK; DA. 1982; VOL. 32; NO 4; PP. 405-412; ABS. RUS; BIBL. 6 REF.Article
