@article{10_4153_CJM_1981_045_1,
     author = {Jenkins, James A.},
     title = {On {Explicit} {Bounds} in {Landau's} {Theorem.} {II}},
     journal = {Canadian journal of mathematics},
     pages = {559--562},
     year = {1981},
     volume = {33},
     number = {3},
     doi = {10.4153/CJM-1981-045-1},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1981-045-1/}
}