@article{10_1090_jams_888,
     author = {Luk, Jonathan},
     title = {Weak null singularities in general relativity},
     journal = {Journal of the American Mathematical Society},
     pages = {1--63},
     publisher = {mathdoc},
     volume = {31},
     number = {1},
     year = {2018},
     doi = {10.1090/jams/888},
     url = {http://geodesic.mathdoc.fr/articles/10.1090/jams/888/}
}