@article{AIF_1997__47_2_687_0,
     author = {Ou, Ye-Lin},
     title = {Quadratic harmonic morphisms and {O-systems}},
     journal = {Annales de l'Institut Fourier},
     pages = {687--713},
     publisher = {Association des Annales de l{\textquoteright}institut Fourier},
     volume = {47},
     number = {2},
     year = {1997},
     doi = {10.5802/aif.1578},
     zbl = {0918.58020},
     mrnumber = {98j:58038},
     language = {en},
     url = {https://aif.centre-mersenne.org/articles/10.5802/aif.1578/}
}