@ARTICLE{KunchevaTKDE13,
author = {Ludmila I. Kuncheva},
title = {A bound on kappa-error diagrams for analysis of
    classifier ensembles},
journal = {{IEEE} Transactions on Knowledge and Data 
    Engineering},
volume = {25},
number = {3},
year = {2013},
pages = {494--501},
doi = {10.1109/TKDE.2011.234}
}