@article{10_4064_fm_73_2_143_165,
     author = {Aristide Delenau and Peter Hilton},
     title = {On {Kan} extensions of cohomology theories and {Serre} classes of groups},
     journal = {Fundamenta Mathematicae},
     pages = {143--165},
     publisher = {mathdoc},
     volume = {73},
     number = {2},
     year = {1971},
     doi = {10.4064/fm-73-2-143-165},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/fm-73-2-143-165/}
}