@article{10_1017_S0017089500031463,
     author = {P\'erez, Juan Antonio},
     title = {Substitutional lemma for {G-spaces} of 1-dimensional groups},
     journal = {Glasgow mathematical journal},
     pages = {215--220},
     year = {1996},
     volume = {38},
     number = {2},
     doi = {10.1017/S0017089500031463},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/S0017089500031463/}
}