@article{NANO_2017_8_2_a2,
     author = {V. Derkach and C. Trunk},
     title = {Coupling of definitizable operators in {Krein} spaces},
     journal = {Nanosistemy: fizika, himi\^a, matematika},
     pages = {166--179},
     publisher = {mathdoc},
     volume = {8},
     number = {2},
     year = {2017},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/NANO_2017_8_2_a2/}
}