APA (7th ed.) Citation

Friedmann, E. (2013). A theory for drag comparison of rough surfaces. Conference Topical Problems of Fluid Mechanics 2013.

Chicago Style (17th ed.) Citation

Friedmann, Elfriede. "A Theory for Drag Comparison of Rough Surfaces." Conference Topical Problems of Fluid Mechanics 2013 2013.

MLA (9th ed.) Citation

Friedmann, Elfriede. "A Theory for Drag Comparison of Rough Surfaces." Conference Topical Problems of Fluid Mechanics 2013, 2013.

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