@article{CRMATH_2006__343_7_467_0,
     author = {Beno{\^\i}t Merlet},
     title = {Two remarks on liftings of maps with values into $ {S}^{1}$},
     journal = {Comptes Rendus. Math\'ematique},
     pages = {467--472},
     publisher = {Elsevier},
     volume = {343},
     number = {7},
     year = {2006},
     doi = {10.1016/j.crma.2006.07.014},
     language = {en},
}