1. Alexander, S.B., Graf, M., Kunzinger, M., Sämann, C.: Generalized Ccones as Lorentzian Length Spaces: Causality, Curvature, and Singularity Theorems.
ArXiv: 1909.09575
2. Beem, J.K., Ehrlich, P.: Geodesic completeness and stability. Math. Proc. Camb. Philos. Soc. 102, 319–328 (1987)
3. Burago, D., Burago, Y., Ivanov, S.: A Course in Metric Geometry. American Mathematical Society, Providence (2001)
4. Burtscher, A.: Length structures on manifolds with continuous Riemannian metrics. N. Y. J. Math. 21, 273–296 (2015)
5. Burtscher, A., LeFloch, P.G.: The formation of trapped surfaces in spherically-symmetric Einstein–Euler spacetimes with bounded variation. J. Math. Pures Appl. 102(6), 1164–1217 (2014)