@article{JSFU_2013_6_2_a11,
     author = {Alexander N. Polkovnikov and Aleksander A. Shlapunov},
     title = {On the spectral properties of a~non-coercive mixed problem associated with $\overline\partial$-operator},
     journal = {\v{Z}urnal Sibirskogo federalʹnogo universiteta. Matematika i fizika},
     pages = {247--261},
     publisher = {mathdoc},
     volume = {6},
     number = {2},
     year = {2013},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/JSFU_2013_6_2_a11/}
}