Multiple-level information source and entropy-reduced transformation models.

Yuan Yan Tang Yan-Zhen Qu Ching Y. Suen Multiple-level information source and entropy-reduced transformation models. 341-357 1991 24 Pattern Recognition 4 http://dx.doi.org/10.1016/0031-3203(91)90077-I db/journals/pr/pr24.html#TangQS91