@article{TM_2018_302_a13,
     author = {A. Ya. Maltsev and S. P. Novikov},
     title = {The theory of closed 1-forms, levels of quasiperiodic functions and transport phenomena in electron systems},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {296--315},
     publisher = {mathdoc},
     volume = {302},
     year = {2018},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TM_2018_302_a13/}
}