@article{ZNSL_1980_102_a11,
     author = {M. N. Yakovlev},
     title = {Estimates of the solutions two-point problem for systems of intergo-differential equations first order and method of
},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {156--173},
     publisher = {mathdoc},
     volume = {102},
     year = {1980},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1980_102_a11/}
}