@inbook{401683,
title = {13 Properties of central dispersions},
booktitle = {Linear Differential Transformations of the Second Order},
series = {GDML\_Books},
publisher = {The English Universities Press, Ltd.},
address = {London},
year = {1971},
pages = {[118]-134},
url = {http://dml.mathdoc.fr/item/401683}
}
(éd.). 13 Properties of central dispersions, dans Linear Differential Transformations of the Second Order, GDML_Books, (1971), pp. [118]-134. http://gdmltest.u-ga.fr/item/401683/