APA (7th ed.) Citation

Knochel, A. K., & Wetterich, C. (2012). Theoretical constraints on new generations with and without quarks or neutrinos. Physics letters, 706(4/5), . https://doi.org/10.1016/j.physletb.2011.09.004

Chicago Style (17th ed.) Citation

Knochel, Alexander Karl, and Christof Wetterich. "Theoretical Constraints on New Generations with and Without Quarks or Neutrinos." Physics Letters 706, no. 4/5 (2012). https://doi.org/10.1016/j.physletb.2011.09.004.

MLA (9th ed.) Citation

Knochel, Alexander Karl, and Christof Wetterich. "Theoretical Constraints on New Generations with and Without Quarks or Neutrinos." Physics Letters, vol. 706, no. 4/5, 2012, https://doi.org/10.1016/j.physletb.2011.09.004.