@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/