@ARTICLE{
author={Dolinka Igor,East James,Evangelou Athanasios,FitzGerald Des,Ham Nicholas,Hyde James,Loughlin Nicholas,Mitchell James D},
year={2019},
title={Enumeration of idempotents in planar diagram monoids},
journal={JOURNAL OF ALGEBRA},
volume={522},
number={},
pages={351-385},
document_type={Article},
} 

@ARTICLE{
author={Dolinka Igor,East James,Evangelou Athanasios,FitzGerald Des,Ham Nicholas,Hyde James,Loughlin Nicholas},
year={2015},
title={Enumeration of idempotents in diagram semigroups and algebras},
journal={JOURNAL OF COMBINATORIAL THEORY SERIES A},
volume={131},
number={},
pages={119-152},
document_type={Article},
}