References
- Hayman , W. K. 1978 . On Iversen's theorem for meromorphicfunctions with few poles . Acta Math , 141 ( 2 ) : 115 – 145 .
- Iversen , F. 1914 . Reeherches sur les fonctions inverses des function méromorphes . These tie Helsingfors , 141 ( 2 )