ck-url www.aclweb.org/anthology/w19-1705
ck-url www.lrec-conf.org/proceedings/lrec2012/pdf/553_paper.pdf
ck-url www.lrec-conf.org/proceedings/lrec2012/pdf/715_paper.pdf
ck-url www.lrec-conf.org/proceedings/lrec2014/pdf/356_paper.pdf
ck-url www.lrec-conf.org/proceedings/lrec2014/pdf/375_paper.pdf
ck-url www.lrec-conf.org/proceedings/lrec2014/pdf/378_paper.pdf
ck-url www.lrec-conf.org/proceedings/lrec2014/pdf/401_paper.pdf
ck-url www.ncbi.nlm.nih.gov/pmc/articles/pmc3168309
ck-url www.ncbi.nlm.nih.gov/pmc/articles/pmc3168309/pdf/amiajnl-2011-000150.pdf
ck-url www.researchgate.net/publication/329716534_automated_assessment_of_knowledge_hierarchy_evolution_comparing_directed_acyclic_graphs