@article{LJM_2005_20_a4,
     author = {V. K. Gorbunov and A. Gorobetz and V. Sviridov},
     title = {The method of normal splines for linear implicit differential equations of second order},
     journal = {Lobachevskii journal of mathematics},
     pages = {59--75},
     publisher = {mathdoc},
     volume = {20},
     year = {2005},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/LJM_2005_20_a4/}
}