@article{PORMA_1981__40_4_115463,
     author = {Hassan, M.I.},
     title = {On the first mixed problem for a parabolic equation with right side in $L_{loc}^2$},
     journal = {Portugaliae mathematica},
     pages = {369--375},
     publisher = {mathdoc},
     volume = {40},
     number = {4},
     year = {1981},
     mrnumber = {0836097},
     url = {http://geodesic.mathdoc.fr/item/PORMA_1981__40_4_115463/}
}