Patrice Onno Christine Guillemot Data-rate constrained lattice vector quantization: a new quantizing algorithm in a rate-distortion sense. 117-120 1995 conf/icip/1995 ICIP http://doi.ieeecomputersociety.org/10.1109/ICIP.1995.529053 db/conf/icip/icip1995-1.html#OnnoG95