Geodesic
On the Schur–Cohn problem
Matematičeskie zametki, Tome 18 (1975) no. 1, pp. 27-30 
G. F. Korsakov. On the Schur–Cohn problem. Matematičeskie zametki, Tome 18 (1975) no. 1, pp. 27-30. http://geodesic.mathdoc.fr/item/MZM_1975_18_1_a3/
@article{MZM_1975_18_1_a3,
     author = {G. F. Korsakov},
     title = {On the {Schur{\textendash}Cohn} problem},
     journal = {Matemati\v{c}eskie zametki},
     pages = {27--30},
     year = {1975},
     volume = {18},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1975_18_1_a3/}
}
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Voir la notice de l'article provenant de la source Math-Net.Ru

A`new criterion (in terms of determinant inequalities) is obtained for all the roots of a real polynomial to lie inside the unit circle, i.e., a criterion of stability of periodic motions. In contrast to the Schur-Cohn criterion, the number of determinants used by us is by four times smaller.