@article{10_4153_CMB_1969_044_0,
     author = {Nobusawa, Nobuo},
     title = {On {Rationality} of {Algebraic} {Function} {Fields}},
     journal = {Canadian mathematical bulletin},
     pages = {339--341},
     year = {1969},
     volume = {12},
     number = {3},
     doi = {10.4153/CMB-1969-044-0},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CMB-1969-044-0/}
}