@article{NANO_2013_4_6_a1,
     author = {A. A. Boitsev and H. Neidhardt and I. Yu. Popov},
     title = {Weyl function for sum of operators tensor products},
     journal = {Nanosistemy: fizika, himi\^a, matematika},
     pages = {747--759},
     publisher = {mathdoc},
     volume = {4},
     number = {6},
     year = {2013},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/NANO_2013_4_6_a1/}
}