@article{10_4064_am_15_1_105_115,
     author = {B. D. Bojanov},
     title = {Optimal methods of integration in the class of differentiable functions},
     journal = {Applicationes Mathematicae},
     pages = {105--115},
     publisher = {mathdoc},
     volume = {15},
     number = {1},
     year = {1976},
     doi = {10.4064/am-15-1-105-115},
     zbl = {0353.65010},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/am-15-1-105-115/}
}