Title: Early warning signals also precede non-catastrophic transitions

Authors: Kefi, S., V. Dakos, M. Scheffer, E.H. van Nes, and M. Rietkerk

Citation: Kefi, S., V. Dakos, M. Scheffer, E.H. van Nes, and M. Rietkerk. 2013. Early warning signals also precede non-catastrophic transitions. Oikos 122(5):641-648.