@article{10_4153_CJM_1972_001_7,
     author = {Chapman, G. R.},
     title = {A {Class} of {Non-Central} {E-Functors}},
     journal = {Canadian journal of mathematics},
     pages = {1--4},
     year = {1972},
     volume = {24},
     number = {1},
     doi = {10.4153/CJM-1972-001-7},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1972-001-7/}
}