@article{10_4153_CJM_1971_031_1,
     author = {Mercer, A. McD.},
     title = {On {Certain} {Functional} {Identities} in {EN}},
     journal = {Canadian journal of mathematics},
     pages = {315--324},
     year = {1971},
     volume = {23},
     number = {2},
     doi = {10.4153/CJM-1971-031-1},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1971-031-1/}
}