Ulrich Langer, S. Repin, Monika Wolfmayr,
"Functional a posteriori error estimates for parabolic time-periodic boundary value problem"
, in Computational Methods in Applied Mathematics, Vol. 15, Nummer 3, Seite(n) 353-372, 2015, ISSN: 1609-9389
Original Titel:
Functional a posteriori error estimates for parabolic time-periodic boundary value problem