@article{DIA_1990__23__7_0,
     author = {Guitart, Ren\'e},
     title = {Construction of an homology and a cohomology theory associated to a first order formula},
     journal = {Diagrammes},
     pages = {7--13},
     publisher = {Universit\'e Paris 7, Unit\'e d'enseignement et de recherche de math\'ematiques},
     volume = {23},
     year = {1990},
     mrnumber = {1082995},
     zbl = {0715.18004},
     language = {en},
     url = {http://www.numdam.org/item/DIA_1990__23__7_0/}
}