@article{ASNSP_1965_3_19_3_415_0,
     author = {Cannon, J. R.},
     title = {Regularity at the boundary for solutions of linear parabolic differential equations},
     journal = {Annali della Scuola Normale Superiore di Pisa - Scienze Fisiche e Matematiche},
     pages = {415--427},
     publisher = {Scuola normale superiore},
     volume = {Ser. 3, 19},
     number = {3},
     year = {1965},
     mrnumber = {209678},
     zbl = {0158.11603},
     language = {en},
     url = {http://www.numdam.org/item/ASNSP_1965_3_19_3_415_0/}
}