Search results
Applied Mathematics Letters > 2016 > 58 > C > 87-94
Journal of Differential Equations > 2013 > 254 > 5 > 2196-2232
Acta Mathematica Sinica, English Series > 2010 > 26 > 7 > 1287-1298
Mediterranean Journal of Mathematics > 2010 > 7 > 2 > 225-248
Science China Mathematics > 2008 > 51 > 6 > 1036-1058