Voir la notice de l'article provenant de la source Math-Net.Ru
@article{MZM_1990_47_3_a13, author = {N. S. Fal'ko}, title = {Almost reducible {Hill} equations with almost periodic coefficients}, journal = {Matemati\v{c}eskie zametki}, pages = {106--112}, publisher = {mathdoc}, volume = {47}, number = {3}, year = {1990}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1990_47_3_a13/} }
N. S. Fal'ko. Almost reducible Hill equations with almost periodic coefficients. Matematičeskie zametki, Tome 47 (1990) no. 3, pp. 106-112. http://geodesic.mathdoc.fr/item/MZM_1990_47_3_a13/