@article{702265,
title = {On the transformation theory of ordinary second-order linear symmetric differential equations},
booktitle = {Equadiff 5},
series = {GDML\_Books},
publisher = {BSB B.G. Teubner Verlagsgesellschaft},
address = {Leipzig},
year = {1982},
pages = {87-90},
zbl = {0532.34016},
url = {http://dml.mathdoc.fr/item/702265}
}
Everitt, W. N. On the transformation theory of ordinary second-order linear symmetric differential equations, dans Equadiff 5, GDML_Books, (1982), pp. 87-90. http://gdmltest.u-ga.fr/item/702265/