Jingwei Liang Jalal Fadili Gabriel Peyré Local Convergence Properties of Douglas-Rachford and Alternating Direction Method of Multipliers. 874-913 2017 172 J. Optim. Theory Appl. 3 https://doi.org/10.1007/s10957-017-1061-z db/journals/jota/jota172.html#LiangFP17