Revisiting self-regulatory techniques to promote physical activity in older adults: Null findings from a randomized controlled trial.

Author(s)	Warner LM, Wolff JK, Ziegelmann JP, Schwarzer R, Wurm S.
Journal / Source	http://www.tandfonline.com/doi/abs/10.1080/08870446.2016.1185523
Date	June 2016