no. 2
The principle of minimal electromagnetic interaction in terms of pure geometry
Annales de l'institut Henri Poincaré. Section A, Physique Théorique, Tome 17 (1972) no. 2, pp. 159-170. 
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     author = {von Westenholz, C.},
     title = {The principle of minimal electromagnetic interaction in terms of pure geometry},
     journal = {Annales de l'institut Henri Poincar\'e. Section A, Physique Th\'eorique},
     pages = {159--170},
     publisher = {Gauthier-Villars},
     volume = {17},
     number = {2},
     year = {1972},
     mrnumber = {327257},
     language = {en},
     url = {http://www.numdam.org/item/AIHPA_1972__17_2_159_0/}
}
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von Westenholz, C. The principle of minimal electromagnetic interaction in terms of pure geometry. Annales de l'institut Henri Poincaré. Section A, Physique Théorique, Tome 17 (1972) no. 2, pp. 159-170. http://www.numdam.org/item/AIHPA_1972__17_2_159_0/

[1] Misner and Wheeler, Ann. Phys. (N. Y.), vol. 2, 1957, p. 525. | Zbl

[2] A. Lichnerowicz, Bull. Soc. math. Fr., t. 92, 1964, p. 11. | Numdam | MR | Zbl

[3] I. Segal, Top., vol. 7, 1968, p. 147. | Zbl

[4] C. Von Westenholz, Intern. J. Theor. Phys., vol. 4, n° 4, 1971, p. 305. | MR

[5] Yang-Mills, Phys. Rev., vol. 96, 1954, p. 191.

[6] Hiley and Stuart, Intern. J. Theor. Phys., vol. 4, n° 4, 1971, p. 247.

[7] R. Hermann, Vector Bundles in Mathematical Physics, Benjamin, Inc., New York, 1971. | Zbl

[8] Ambrose and Singer, Trans. Ann. Math. Soc., vol. 75, 1953, p. 429. | Zbl

[9] C. Von Westenholz, Ann. Inst. H. Poincaré, vol. XV, n° 3, 1971, p. 189. | Numdam | MR | Zbl

[10] J.J. Sakurai, Ann. Phys. (N. Y.), vol. 11, 1960, p. 1.

[11] L. Schwartz, Théorie des Distributions, Hermann, Paris, 1957. | MR | Zbl

[12] A. Lichnerowicz, Théorie globale des connexions et des groupes d'holonomie, Edizioni Cremonese, Roma, 1955. | Zbl