@article{10_4153_CJM_1977_018_2,
     author = {Rahman, Q. I. and Schmeisser, G.},
     title = {On {Rational} {Approximation} on the {Positive} {Real} {Axis}},
     journal = {Canadian journal of mathematics},
     pages = {180--192},
     year = {1977},
     volume = {29},
     number = {1},
     doi = {10.4153/CJM-1977-018-2},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1977-018-2/}
}