@article{paperid:1064982,
author = {Najafi, Hamed},
title = {A CONVERSE OF THE CHARACTERIZATION OF OPERATOR GEOMETRIC MEANS},
journal = {Houston Journal of Mathematics},
year = {2019},
volume = {45},
number = {2},
month = {June},
issn = {0362-1588},
pages = {497--508},
			numpages = {11},
keywords = {Geometric mean; Positive block matrix; Closed convex hulls of
unitary orbits.},
}