@article{AIF_1990__40_1_177_0,
     author = {Baird, Paul},
     title = {Harmonic morphisms and circle actions on 3- and 4-manifolds},
     journal = {Annales de l'Institut Fourier},
     pages = {177--212},
     publisher = {Institut Fourier},
     address = {Grenoble},
     volume = {40},
     number = {1},
     year = {1990},
     doi = {10.5802/aif.1210},
     zbl = {0676.58023},
     mrnumber = {91e:57025},
     language = {en},
     url = {https://aif.centre-mersenne.org/articles/10.5802/aif.1210/}
}