Erratum: Erratum to: 25 Years of Self-organized Criticality: Concepts and Controversies Watkins, Nicholas W. ; Pruessner, Gunnar ; Chapman, Sandra C. ; Crosby, Norma B. ; Jensen, Henrik J. Abstract Publication: Space Science Reviews Pub Date: January 2016 DOI: 10.1007/s11214-015-0214-3 Bibcode: 2016SSRv..198...45W