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Open Mathematics > 2017 > 15 > 1 > 1212-1224
Open Mathematics > 2017 > 15 > 1 > 840-851
Open Mathematics > 2016 > 14 > 1 > 736-746
International Journal of Applied Mathematics and Computer Science > 2012 > 22 > 4 > 971-984
International Journal of Applied Mathematics and Computer Science > 2012 > 22 > 4 > 971-984
International Journal of Applied Mathematics and Computer Science > 2011 > 21 > 2 > 317-329
International Journal of Applied Mathematics and Computer Science > 2011 > 21 > 3 > 559-566
International Journal of Applied Mathematics and Computer Science > 2004 > 14 > 3 > 289-316
Discussiones Mathematicae, Differential Inclusions, Control and Optimization > 2000 > 20 > 2 > 257-278