%0 Journal Article
%@ 0001-6969
%A  Kittaneh Fuad
%D 1984
%F acta:14990
%J Acta scientiarum mathematicarum
%K Matematika
%N 3-4
%P 441-444
%T Some characterizations of self-adjoint operators
%U http://acta.bibl.u-szeged.hu/14990/
%V 47
%Z Bibliogr.: 444. p.