@article{AIF_1964__14_1_87_0,
     author = {Olech, Czeslaw},
     title = {Global phase- portrait of a plane autonomous system},
     journal = {Annales de l'Institut Fourier},
     pages = {87--97},
     publisher = {Institut Fourier},
     address = {Grenoble},
     volume = {14},
     number = {1},
     year = {1964},
     doi = {10.5802/aif.164},
     zbl = {0134.07403},
     mrnumber = {29 #6127},
     language = {en},
     url = {https://aif.centre-mersenne.org/articles/10.5802/aif.164/}
}