Keith M. Chugg Xiaopeng Chen Antonio Ortega Cheng-Wei Chang An Iterative Algorithm for Two-Dimensional Digital Least Metric Problems with Applications to Digital Image Compression. 722-726 1998 ICIP (2) db/conf/icip/icip1998-2.html#ChuggCOC98 http://doi.ieeecomputersociety.org/10.1109/ICIP.1998.723631