@article{10_1017_S0017089500000628,
     author = {Hejhal, Dennis A.},
     title = {On the loci |f(z)| = {R,} f(z) {Entire}},
     journal = {Glasgow mathematical journal},
     pages = {94--102},
     year = {1969},
     volume = {10},
     number = {2},
     doi = {10.1017/S0017089500000628},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/S0017089500000628/}
}