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Science China Mathematics > 2019 > 62 > 12 > 2527-2534
Chinese Annals of Mathematics, Series B > 2012 > 33 > 3 > 419-428
Acta Mathematica Sinica, English Series > 2011 > 27 > 4 > 789-798
Nonlinear Analysis: Hybrid Systems > 2008 > 2 > 3 > 952-957
Automatyka / Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie > 2008 > T. 12, z. 1 > 77-88
Topology and its Applications > 2006 > 153 > 12 > 2096-2103