@article{10_4064_cm_50_2_173_185,
     author = {W. Bowen},
     title = {The exocenter of a double {Heyting} algebra},
     journal = {Colloquium Mathematicum},
     pages = {173--185},
     publisher = {mathdoc},
     volume = {50},
     number = {2},
     year = {1985},
     doi = {10.4064/cm-50-2-173-185},
     language = {fr},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/cm-50-2-173-185/}
}