Locally Balanced Binary Trees. - A. Walker; Derick Wood (Comput. J., 1976)

3D Imaging of Transparent Objects. - Andrew M. Wallace; Péter Csákány; Gerald S. Buller; A. Walker (BMVC, 2000)

Classification of urban SAR imagery using object oriented techniques. - D. G. Corr; A. Walker; U. Benz; Iris Lingenfelder; A. Rodrigues (IGARSS, 2003)