@article{VUU_2021_31_4_a2,
     author = {B. I. Ananyev},
     title = {On some estimation problems for nonlinear dynamic systems},
     journal = {Vestnik Udmurtskogo universiteta. Matematika, mehanika, kompʹ\^uternye nauki},
     pages = {562--577},
     year = {2021},
     volume = {31},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VUU_2021_31_4_a2/}
}