@article{ASNSP_1981_4_8_2_311_0,
     author = {Bedford, Eric},
     title = {Stability of the polynomial hull of $T^2$},
     journal = {Annali della Scuola Normale Superiore di Pisa - Classe di Scienze},
     pages = {311--315},
     publisher = {Scuola normale superiore},
     volume = {Ser. 4, 8},
     number = {2},
     year = {1981},
     mrnumber = {623939},
     zbl = {0472.32012},
     language = {en},
     url = {http://archive.numdam.org/item/ASNSP_1981_4_8_2_311_0/}
}