@article{ASUO_2016_XXIV_3_a11,
     author = {Mohammad Taghi Heydari and Sajad Ranjbar},
     title = {Halpern-type proximal point algorithm in
                            complete cat(0) metric space},
     journal = {Analele Universit\u{a}\c{t}ii "Ovidius" Constan\c{t}a Seria Matematic\u{a}},
     publisher = {mathdoc},
     volume = {XXIV},
     number = {3},
     year = {2016},
     url = {http://geodesic.mathdoc.fr/item/ASUO_2016_XXIV_3_a11/}
}