%0 Journal Article %T Lyapunov-type inequalities and disconjugacy for some nonlinear difference system %A Qi-Ming Zhang %A Xiaofei He and XH Tang %J Advances in Difference Equations %D 2013 %I %R 10.1186/1687-1847-2013-16 %X MSC: 34D20, 39A99. %K difference system %K nonlinearity %K Lyapunov-type inequality %K generalized zero %K disconjugacy %U http://www.advancesindifferenceequations.com/content/2013/1/16/abstract