https://arxiv.org/abs/1406.3227
[1406.3227] Gyratonic pp-waves and their impulsive limit
Abstract page for arXiv paper 1406.3227: Gyratonic pp-waves and their impulsive limit
pp waves14063227impulsivelimit
https://arxiv.org/abs/hep-th/0307265
[hep-th/0307265] Classical and Quantum Strings in compactified pp-waves and Godel type Universes
Abstract page for arXiv paper hep-th/0307265: Classical and Quantum Strings in compactified pp-waves and Godel type Universes