@inbook{401681,
title = {11 The transformation problem},
booktitle = {Linear Differential Transformations of the Second Order},
series = {GDML\_Books},
publisher = {The English Universities Press, Ltd.},
address = {London},
year = {1971},
pages = {[109]-111},
language = {cs},
url = {http://dml.mathdoc.fr/item/401681}
}
(éd.). 11 The transformation problem, dans Linear Differential Transformations of the Second Order, GDML_Books, (1971), pp. [109]-111. http://gdmltest.u-ga.fr/item/401681/