@article{AIF_2007__57_4_1135_0,
     author = {Belgun, Florin Alexandru and Ginoux, Nicolas and Rademacher, Hans-Bert},
     title = {A {Singularity} {Theorem} for {Twistor} {Spinors}},
     journal = {Annales de l'Institut Fourier},
     pages = {1135--1159},
     publisher = {Association des Annales de l{\textquoteright}institut Fourier},
     volume = {57},
     number = {4},
     year = {2007},
     doi = {10.5802/aif.2289},
     zbl = {1128.53026},
     mrnumber = {2339323},
     language = {en},
     url = {http://archive.numdam.org/articles/10.5802/aif.2289/}
}