@article{AFM_1975_1_1_a4,
     author = {Seppo Heikkil\"a},
     title = {On the method of successive approximations for {Volterra} integral equations},
     journal = {Annales Fennici Mathematici},
     pages = {39--47},
     publisher = {mathdoc},
     volume = {1},
     number = {1},
     year = {1975},
     doi = {10.5186/aasfm.1975.0103},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.5186/aasfm.1975.0103/}
}