AUTHOR=Karagiannakis Giannis, Baccaglini-Frank Anna, Papadatos Yiannis TITLE=Mathematical learning difficulties subtypes classification JOURNAL=Frontiers in Human Neuroscience VOLUME=8 YEAR=2014 URL=https://www.frontiersin.org/articles/10.3389/fnhum.2014.00057 DOI=10.3389/fnhum.2014.00057 ISSN=1662-5161