@article{00039592, title = {A parabolic differential equation with unbounded piecewise constant delay.}, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {15}, year = {1992}, pages = {339-346}, doi = {10.1155/S0161171292000425}, zbl = {0803.34072}, language = {en}, url = {http://dml.mathdoc.fr/item/00039592} }
Wiener, Joseph; Debnath, Lokenath. A parabolic differential equation with unbounded piecewise constant delay.. International Journal of Mathematics and Mathematical Sciences, Tome 15 (1992) pp. 339-346. doi : 10.1155/S0161171292000425. http://gdmltest.u-ga.fr/item/00039592/