@article{10_4064_ap_51_1_167_178,
     author = {A. F. Iz\'e},
     title = {Lyapunov numbers for a countable system of ordinary differential equations},
     journal = {Annales Polonici Mathematici},
     pages = {167--178},
     publisher = {mathdoc},
     volume = {51},
     number = {1},
     year = {1990},
     doi = {10.4064/ap-51-1-167-178},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/ap-51-1-167-178/}
}