@article{10_4064_ap_23_1_1_5,
     author = {Z. Knap},
     title = {On a certain property of solution of the equation $u_t = u_{xx} + f(x, t, u)$},
     journal = {Annales Polonici Mathematici},
     pages = {1--5},
     publisher = {mathdoc},
     volume = {23},
     number = {1},
     year = {1970},
     doi = {10.4064/ap-23-1-1-5},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap-23-1-1-5/}
}