Key points are not available for this paper at this time.
This is the chapter Topological Codes of the book Quantum Error Correction, edited by Daniel A. Lidar and Todd A. Brun, Cambridge University Press, New York, 2013. http: //www. cambridge. org/us/academic/subjects/physics/quantum-physics-quantum-information-and-quantum-computation/quantum-error-correction
Héctor Bombín (Fri,) studied this question.