@article{AFM_1975_581-600_a4,
     author = {Maurice Heins},
     title = {Nonpersistence of the {Grenzkreis} phenomenon for {Pick-Nevanlinna} interpolation on annuli},
     journal = {Annales Fennici Mathematici},
     publisher = {mathdoc},
     volume = {581-600},
     year = {1975},
     doi = {10.5186/aasfm.1975.596},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.5186/aasfm.1975.596/}
}