By Zheng Zhaowen   in Acta Mathematica Hungarica

ISSN:0236-5294|110|3|241-252

Springer Publishing Company ‎(2006)‎

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By Zheng Zhaowen   in Journal of Difference Equations and Applications

ISSN:1023-6198|19|8|1243-1250

Taylor & Francis Ltd‎(2013)‎

Access to resources Favorite 18.626055