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@article{MASLO_1981__31_3_a3, author = {Vonkomerov\'a, Marta}, title = {On the extension of positive operators}, journal = {Mathematica slovaca}, pages = {251--262}, publisher = {mathdoc}, volume = {31}, number = {3}, year = {1981}, mrnumber = {621916}, zbl = {0457.46004}, language = {en}, url = {http://geodesic.mathdoc.fr/item/MASLO_1981__31_3_a3/} }
Vonkomerová, Marta. On the extension of positive operators. Mathematica slovaca, Tome 31 (1981) no. 3, pp. 251-262. http://geodesic.mathdoc.fr/item/MASLO_1981__31_3_a3/