X Ma, C Martin, G McIntyre, P Lin, P Mossey. 2017, 'Digital three-dimensional automation of the modified Huddart and Bodenham scoring system for patients with cleft lip and palate', The Cleft Palate-Craniofacial Journal, 54 (4), 481-486.
CB Martin, X Ma, GT McIntyre, W Wang, P Lin, EV Chalmers, PA Mossey. 2016. 'The validity and reliability of an automated method of scoring dental arch relationships in unilateral cleft lip and palate using the modified Huddart–Bodenham scoring system', European Journal of Orthodontics, 38 (4), 353-358.
X Ma, RJ Cripps. 2011. 'Shape preserving data reduction for 3D surface points'. Computer-Aided Design, 43 (8), 902-909.
X Ma, S Keates, Y Jiang, J Kosinka. 2015. 'Subdivision surface fitting to a dense mesh using ridges and umbilics'. Computer Aided Geometric Design, 32, 5-21.
M Ainsworth, X Ma. 2012. 'Non-uniform order mixed FEM approximation: Implementation, post-processing, computable error bound and adaptivity'. Journal of Computational Physics, 231 (2), 436-453.