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Journal of Mathematics and Applications > 2015 > Vol. 38 > 49--57
Acta Mathematica Vietnamica > 2014 > 39 > 2 > 185-192
Mathematical and Computer Modelling > 2010 > 52 > 9-10 > 1605-1609
Applied Mathematics and Computation > 2007 > 187 > 1 > 62-67
The Ramanujan Journal > 2007 > 13 > 1-3 > 449-469
Decision Support Systems > 2006 > 42 > 1 > 318-327
BIT Numerical Mathematics > 2005 > 45 > 3 > 593-603
Demonstratio Mathematica > 2005 > Vol. 38, nr 2 > 313--322
Applied Mathematics and Computation > 2003 > 135 > 2-3 > 251-262