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Computers and Mathematics with Applications > 2011 > 62 > 8 > 2899-2912
Geometriae Dedicata > 2011 > 151 > 1 > 27-39
Applied Mathematics and Computation > 2010 > 216 > 11 > 3200-3208
Differential Geometry and its Applications > 2008 > 26 > 2 > 133-139
Journal of Geometry and Physics > 2004 > 49 > 1 > 89-100