@article{700085,
     title = {On two-sided difference methods for ordinary differential equations},
     booktitle = {Proceedings of Equadiff III},
     series = {GDML\_Books},
     publisher = {Univ. J. E. Purkyn\v e - P\v r\'\i rodov\v edeck\'a fakulta},
     address = {Brno},
     year = {1973},
     pages = {81-87},
     mrnumber = {MR0388789},
     zbl = {0342.65048},
     url = {http://dml.mathdoc.fr/item/700085}
}

Volkov, E. A. On two-sided difference methods for ordinary differential equations, dans Proceedings of Equadiff III, GDML_Books,  (1973), pp. 81-87. http://gdmltest.u-ga.fr/item/700085/