no. 4
Conformal invariance of the equations of motion in curved spaces
Annales de l'I.H.P. Physique théorique, Tome 17 (1972) no. 4, pp. 379-397. 
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     author = {Schnirman, E. and Oliveira, Colber},
     title = {Conformal invariance of the equations of motion in curved spaces},
     journal = {Annales de l'I.H.P. Physique th\'eorique},
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     number = {4},
     year = {1972},
     mrnumber = {339776},
     language = {en},
     url = {http://www.numdam.org/item/AIHPA_1972__17_4_379_0/}
}
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Schnirman, E.; Oliveira, C. G. Conformal invariance of the equations of motion in curved spaces. Annales de l'I.H.P. Physique théorique, Tome 17 (1972) no. 4, pp. 379-397. http://www.numdam.org/item/AIHPA_1972__17_4_379_0/

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