@article{PORMA_1985__43_3_114516,
     author = {Fattorini, H.O.},
     title = {Two approximation results for the parabolic singular perturbation problem},
     journal = {Portugaliae mathematica},
     pages = {331--346},
     publisher = {mathdoc},
     volume = {43},
     number = {3},
     year = {1985},
     mrnumber = {0886460},
     zbl = {0603.34056},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PORMA_1985__43_3_114516/}
}