Search results
Afrika Matematika > 2018 > 29 > 7-8 > 1265-1271
Applied Mathematics and Computation > 2011 > 218 > 3 > 693-698
Applied Mathematics Letters > 2011 > 24 > 8 > 1359-1363
Applied Mathematics and Computation > 2009 > 215 > 4 > 1448-1455
Applied Mathematics Letters > 2007 > 20 > 12 > 1218-1222