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@article{MZ_1971__121_171566, author = {Peter I. Booth}, title = {The {Section} {Problem} and the {Lifting} {Problem.}}, journal = {Mathematische Zeitschrift}, pages = {273--287}, publisher = {mathdoc}, volume = {121}, year = {1971}, zbl = {0207.22203}, url = {http://geodesic.mathdoc.fr/item/MZ_1971__121_171566/} }
Peter I. Booth. The Section Problem and the Lifting Problem.. Mathematische Zeitschrift, Tome 121 (1971), pp. 273-287. http://geodesic.mathdoc.fr/item/MZ_1971__121_171566/