@article{10_4064_fm177_1_4,
     author = {Alain Troesch},
     title = {Une formule pour les extensions de foncteurs compos\'es},
     journal = {Fundamenta Mathematicae},
     pages = {55--82},
     publisher = {mathdoc},
     volume = {177},
     number = {1},
     year = {2003},
     doi = {10.4064/fm177-1-4},
     language = {fr},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/fm177-1-4/}
}