@article{JMPA_1948_9_27__87_0,
     author = {Aronszajn, N.},
     title = {Recherches sur les fonctions harmoniques dans un carr\'e},
     journal = {Journal de Math\'ematiques Pures et Appliqu\'ees},
     pages = {87--175},
     volume = {9e s{\'e}rie, 27},
     year = {1948},
     zbl = {0033.18302},
     mrnumber = {26163},
     language = {fr},
     url = {http://www.numdam.org/item/JMPA_1948_9_27__87_0/}
}