APA (7th ed.) Citation

Debbasch, F. (2004). What is a mean gravitational field? European Physical Journal B: Condensed Matter, 37(2), 257. https://doi.org/10.1140/epjb/e2004-00053-9

Chicago Style (17th ed.) Citation

Debbasch, F. "What Is a Mean Gravitational Field?" European Physical Journal B: Condensed Matter 37, no. 2 (2004): 257. https://doi.org/10.1140/epjb/e2004-00053-9.

MLA (9th ed.) Citation

Debbasch, F. "What Is a Mean Gravitational Field?" European Physical Journal B: Condensed Matter, vol. 37, no. 2, 2004, p. 257, https://doi.org/10.1140/epjb/e2004-00053-9.