no. 2
Space-times admitting a covariantly constant spinor field
Annales de l'I.H.P. Physique théorique, Tome 41 (1984) no. 2, pp. 227-236 
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     author = {Taub, A. H.},
     title = {Space-times admitting a covariantly constant spinor field},
     journal = {Annales de l'I.H.P. Physique th\'eorique},
     pages = {227--236},
     year = {1984},
     publisher = {Gauthier-Villars},
     volume = {41},
     number = {2},
     mrnumber = {769157},
     zbl = {0546.53040},
     language = {en},
     url = {https://www.numdam.org/item/AIHPA_1984__41_2_227_0/}
}
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Taub, A. H. Space-times admitting a covariantly constant spinor field. Annales de l'I.H.P. Physique théorique, Tome 41 (1984) no. 2, pp. 227-236. https://www.numdam.org/item/AIHPA_1984__41_2_227_0/

[1] A.H. Taub, « Curvature Invariants, Characteristic Classes and Petrov Classification of Space-Times », in Differential Geometry and Relativity Cahen & Flato (eds.), D. Reidel Publishing Co., Dordrecth-Holland, 1976.