@article{ASNSP_1995_4_22_1_137_0,
     author = {Hansen, W. and Nadirashvili, N.},
     title = {On {Veech's} conjecture for harmonic functions},
     journal = {Annali della Scuola Normale Superiore di Pisa - Classe di Scienze},
     pages = {137--153},
     publisher = {Scuola normale superiore},
     volume = {Ser. 4, 22},
     number = {1},
     year = {1995},
     mrnumber = {1315353},
     zbl = {0846.31003},
     language = {en},
     url = {http://www.numdam.org/item/ASNSP_1995_4_22_1_137_0/}
}