@article{ZNSL_2006_338_a7,
     author = {S. A. Kruglyak and L. A. Nazarova and A. V. Roiter},
     title = {Orthoscalar representations of quivers in the category of {Hilbert} spaces},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {180--201},
     publisher = {mathdoc},
     volume = {338},
     year = {2006},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2006_338_a7/}
}