@article{NUMA_1976__26_132414,
     author = {M.N. Spijker},
     title = {On the {Possibility} of {Two-Sided} {Error} {Bounds} in the {Numerical} {Solution} of {Initial} {Value} {Problems.}},
     journal = {Numerische Mathematik},
     pages = {271--300},
     publisher = {mathdoc},
     volume = {26},
     year = {1976},
     zbl = {0314.65035},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1976__26_132414/}
}