@article{ASNSP_1979_4_6_2_305_0,
     author = {Fabes, E. and Sroka, S. and Widman, K.-O.},
     title = {Littlewood-Paley a priori estimates for parabolic equations with {sub-Dini} continuous coefficients},
     journal = {Annali della Scuola Normale Superiore di Pisa - Classe di Scienze},
     pages = {305--334},
     publisher = {Scuola normale superiore},
     volume = {Ser. 4, 6},
     number = {2},
     year = {1979},
     mrnumber = {541451},
     zbl = {0427.35017},
     language = {en},
     url = {http://www.numdam.org/item/ASNSP_1979_4_6_2_305_0/}
}