University of GuilanJournal of Mathematical Modeling2345-394X5120170601GGMRES: A GMRES--type algorithm for solving singular linear equations with index one114195410.22124/jmm.2017.1954ENAlireza AtaeiMathematics Department, Faculty of Science, Persian Gulf University, IranFaezeh ToutounianDepartment of Applied Mathematics, School of Mathematical Sciences20161125http://jmm.guilan.ac.ir/article_1954_dcd4f79f7ead59a08d2173d1dbddaad0.pdf