APA (7th ed.) Citation

Caffau, E., & Ludwig, H. (2013). The photospheric solar oxygen project: II. Non-concordance of the oxygen abundance derived from two forbidden lines. Astronomy and astrophysics, 554(?), .

Chicago Style (17th ed.) Citation

Caffau, Elisabetta, and Hans-Günter Ludwig. "The Photospheric Solar Oxygen Project: II. Non-concordance of the Oxygen Abundance Derived from Two Forbidden Lines." Astronomy and Astrophysics 554, no. ? (2013).

MLA (9th ed.) Citation

Caffau, Elisabetta, and Hans-Günter Ludwig. "The Photospheric Solar Oxygen Project: II. Non-concordance of the Oxygen Abundance Derived from Two Forbidden Lines." Astronomy and Astrophysics, vol. 554, no. ?, 2013.

Warning: These citations may not always be 100% accurate.