@article{10_1017_S0017089500004432,
     author = {Kalton, N. J.},
     title = {Curves with zero derivative in {F-spaces}},
     journal = {Glasgow mathematical journal},
     pages = {19--29},
     year = {1981},
     volume = {22},
     number = {1},
     doi = {10.1017/S0017089500004432},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/S0017089500004432/}
}