@article{SchaKo:12,
  journal = {Fixed Point Theory and Applications},
  pages = {19pp.},
  title = {Effective metastability for modified Halpern iterations in {CAT(0)}
           spaces.},
  author = {Schade, Katharina and Kohlenbach, Ulrich},
  volume = 2012,
  year = 2012,
}