@article{MASLO_2003_53_1_a3,
     author = {Ewert, Janina and Ponomarev, Stanislav P.},
     title = {On the existence of $\omega$-primitives on arbitrary metric spaces},
     journal = {Mathematica slovaca},
     pages = {51--57},
     year = {2003},
     volume = {53},
     number = {1},
     mrnumber = {1964203},
     zbl = {1053.26003},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/MASLO_2003_53_1_a3/}
}