@article{700159,
title = {A posteriori estimations of approximate solutions for some types of boundary value problems},
booktitle = {Equadiff 6},
series = {GDML\_Books},
publisher = {J. E. Purkyn\v e University, Department of Mathematics},
address = {Brno},
year = {1986},
pages = {[373]-378},
mrnumber = {MR0877151},
zbl = {0609.35001},
url = {http://dml.mathdoc.fr/item/700159}
}
Kodnár, Rudolf. A posteriori estimations of approximate solutions for some types of boundary value problems, dans Equadiff 6, GDML_Books, (1986), pp. [373]-378. http://gdmltest.u-ga.fr/item/700159/