@article {LieRozStr02,
    AUTHOR = {Liesen, J{\"o}rg and Rozlo{\v{z}}n{\'{\i}}k, Miroslav
              and Strako{\v{s}}, Zden{\v e}k},
     TITLE = {Least squares residuals and minimal residual methods},
   JOURNAL = {SIAM J. Sci. Comput.},
  FJOURNAL = {SIAM Journal on Scientific Computing},
    VOLUME = {23},
      YEAR = {2002},
    NUMBER = {5},
     PAGES = {1503--1525},
}