no. 4
Analytic singularities and geodesic completeness. I
Annales de l'institut Henri Poincaré. Section A, Physique Théorique, Tome 23 (1975) no. 4, pp. 349-356.
partie suivante Analytic singularities and geodesic completeness. II 
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     author = {Ihrig, E. and Sen, D. K.},
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     pages = {349--356},
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     number = {4},
     year = {1975},
     mrnumber = {386596},
     zbl = {0316.53048},
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Ihrig, E.; Sen, D. K. Analytic singularities and geodesic completeness. I. Annales de l'institut Henri Poincaré. Section A, Physique Théorique, Tome 23 (1975) no. 4, pp. 349-356. http://www.numdam.org/item/AIHPA_1975__23_4_349_0/

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