Volume invariant metamorphosis for solid and hollow rolled shape. - K. K. Cheung; K. M. Yu; Kin-Chuen Hui (Shape Modeling International, 1997)

Volume Invariant Metamorphosis for axisymmetric Shape using the Haar Wavelet. - K. K. Cheung; K. M. Yu; Kin-Chuen Hui (Int. J. Shape Model., 1997)