no. 2
Weber's antenna and the radiation sources
Annales de l'institut Henri Poincaré. Section A, Physique Théorique, Tome 14 (1971) no. 2, pp. 139-151 
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     author = {Madore, J. and Papapetrou, A.},
     title = {Weber's antenna and the radiation sources},
     journal = {Annales de l'institut Henri Poincar\'e. Section A, Physique Th\'eorique},
     pages = {139--151},
     year = {1971},
     publisher = {Gauthier-Villars},
     volume = {14},
     number = {2},
     language = {en},
     url = {https://www.numdam.org/item/AIHPA_1971__14_2_139_0/}
}
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Madore, J.; Papapetrou, A. Weber's antenna and the radiation sources. Annales de l'institut Henri Poincaré. Section A, Physique Théorique, Tome 14 (1971) no. 2, pp. 139-151. https://www.numdam.org/item/AIHPA_1971__14_2_139_0/

[1] J. Weber, Physical Review Letters, t. 22, 1969, p. 1320.

[2] J.L. Synge and A. Schild, Tensor Calculus, Toronto, 1949. | Zbl | MR

[3] J. Weber, General Relativity and Gravitational Waves, New York, 1961. | Zbl

[4] A. Papapetrou, Nuclear Physics, t. 57, 1964, p. 319. | Zbl | MR

[5] R. Sachs, Proc. Roy. Soc., Ser. A, t. 264, 1961, p. 309. | Zbl | MR

[6] J.L. Synge, Relativity: The Special Theory, Amsterdam, 1956. | Zbl | MR