@article{ISU_2019_19_2_a6,
     author = {V. M. Ivanov},
     title = {Estimation of quality of non-stationary systems on the return frequency characteristic plane},
     journal = {Izvestiya of Saratov University. Mathematics. Mechanics. Informatics},
     pages = {207--216},
     publisher = {mathdoc},
     volume = {19},
     number = {2},
     year = {2019},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ISU_2019_19_2_a6/}
}