@article{10_4153_CJM_1993_001_1,
     author = {Duff, G. F. D.},
     title = {In {Memoriam}},
     journal = {Canadian journal of mathematics},
     pages = {3--5},
     year = {1993},
     volume = {45},
     number = {1},
     doi = {10.4153/CJM-1993-001-1},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1993-001-1/}
}