What is it?

Unless otherwise stated, the features in the this module have been derived from the following publication:

HJWL Aerts, ER Velazquez, RTH Leijenaar, et al., "Decoding tumour phenotype by noninvasive imaging using a quantitative radiomics approach", vol. 5, Nat Communication, 2014.
Add Source Citations for features calculations
ENH: Add Source Citations for features calculations

Citation is in the README.md file
