Gerhardt, C. (2009). Quantum cosmological Friedman models with a massive Yang-Mills field. Classical and quantum gravity, 26(13), . https://doi.org/10.1088/0264-9381/26/13/135013
Chicago-Zitierstil (17. Ausg.)Gerhardt, Claus. "Quantum Cosmological Friedman Models with a Massive Yang-Mills Field." Classical and Quantum Gravity 26, no. 13 (2009). https://doi.org/10.1088/0264-9381/26/13/135013.
MLA-Zitierstil (9. Ausg.)Gerhardt, Claus. "Quantum Cosmological Friedman Models with a Massive Yang-Mills Field." Classical and Quantum Gravity, vol. 26, no. 13, 2009, https://doi.org/10.1088/0264-9381/26/13/135013.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.