%0 Journal Article %T Regularly Varying Solutions of Second-Order Difference Equations with Arbitrary Sign Coefficient %A Matucci Serena %A £żeh¨˘k Pavel %J Advances in Difference Equations %D 2010 %I Springer %X Necessary and sufficient conditions for regular or slow variation of all positive solutions of a second-order linear difference equation with arbitrary sign coefficient are established. Relations with the so-called -classification are also analyzed and a generalization of the results to the half-linear case completes the paper. %U http://www.advancesindifferenceequations.com/content/2010/673761