@article{05506423,
title = {Nonautonomous Liv\v sic colligations and hyponormal operators.},
journal = {Acta Mathematica Universitatis Comenianae. New Series},
volume = {78},
year = {2009},
pages = {23-28},
zbl = {1199.53004},
language = {en},
url = {http://dml.mathdoc.fr/item/05506423}
}
Vorobyov, I.V. Nonautonomous Livšic colligations and hyponormal operators.. Acta Mathematica Universitatis Comenianae. New Series, Tome 78 (2009) pp. 23-28. http://gdmltest.u-ga.fr/item/05506423/