Aranha, R. F., Soares, I. D., & Tonini, E. V. (2013). The Bondi-Sachs 4-momentum in non-axisymmetric Robinson-Trautman spacetimes. Classical & Quantum Gravity, 30(2), 1. https://doi.org/10.1088/0264-9381/30/2/025014
Chicago Style (17th ed.) CitationAranha, R. F., I. Damião Soares, and E. V. Tonini. "The Bondi-Sachs 4-momentum in Non-axisymmetric Robinson-Trautman Spacetimes." Classical & Quantum Gravity 30, no. 2 (2013): 1. https://doi.org/10.1088/0264-9381/30/2/025014.
MLA (9th ed.) CitationAranha, R. F., et al. "The Bondi-Sachs 4-momentum in Non-axisymmetric Robinson-Trautman Spacetimes." Classical & Quantum Gravity, vol. 30, no. 2, 2013, p. 1, https://doi.org/10.1088/0264-9381/30/2/025014.
Warning: These citations may not always be 100% accurate.