@article {IOPORT.50158311,
    author       = {Yamasaki, Kazuhito and Nanjo, Kazuyoshi Z. and Chiba, Satoshi},
    title        = {Symmetry and entropy of biological patterns: discrete Walsh functions for 2D image analysis},
    year         = {2011},
    journal      = {Biosystems},
    volume       = {103},
    number       = {1},
    pages        = {105-112},
    doi          = {10.1016/j.biosystems.2010.10.010},
    identifier   = {50158311},
}