@article{IM2_1995_59_1_a7,
     author = {A. Perelli and A. Zaccagnini},
     title = {On the sum of a~prime and a~$k$-th power},
     journal = {Izvestiya. Mathematics },
     pages = {189--204},
     publisher = {mathdoc},
     volume = {59},
     number = {1},
     year = {1995},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_1995_59_1_a7/}
}