@article{RO_2015__49_1_39_0,
     author = {Couceiro, Miguel and Lehtonen, Erkko and Sch\"olzel, Karsten},
     title = {A complete classification of equational classes of threshold functions included in clones},
     journal = {RAIRO - Operations Research - Recherche Op\'erationnelle},
     pages = {39--66},
     publisher = {EDP-Sciences},
     volume = {49},
     number = {1},
     year = {2015},
     doi = {10.1051/ro/2014034},
     mrnumber = {3349115},
     zbl = {1330.06009},
     language = {en},
     url = {http://archive.numdam.org/articles/10.1051/ro/2014034/}
}