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Journal of Geometry and Physics > 2015 > 87 > Complete > 3-29
Journal of Geometry and Physics > 2007 > 57 > 12 > 2437-2454
Physica D: Nonlinear Phenomena > 2004 > 196 > 3-4 > 265-310
Journal of Geometry and Physics > 2015 > 87 > Complete > 3-29
Journal of Geometry and Physics > 2007 > 57 > 12 > 2437-2454
Physica D: Nonlinear Phenomena > 2004 > 196 > 3-4 > 265-310