@inbook{401700, title = {28 An abstract algebraic model for the transformation theory of Jacobian oscillatory differential equations}, booktitle = {Linear Differential Transformations of the Second Order}, series = {GDML\_Books}, publisher = {The English Universities Press, Ltd.}, address = {London}, year = {1971}, pages = {[227]-236}, url = {http://dml.mathdoc.fr/item/401700} }
(éd.). 28 An abstract algebraic model for the transformation theory of Jacobian oscillatory differential equations, dans Linear Differential Transformations of the Second Order, GDML_Books, (1971), pp. [227]-236. http://gdmltest.u-ga.fr/item/401700/