@misc{ND_2022_18_5_a0,
     title = {Introductory {Note}},
     journal = {Russian journal of nonlinear dynamics},
     pages = {753},
     publisher = {mathdoc},
     volume = {18},
     number = {5},
     year = {2022},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ND_2022_18_5_a0/}
}