@misc{10498/35349,
year = {2003},
url = {http://hdl.handle.net/10498/35349},
abstract = {In this paper we develop the basic ideas of Janet by using the theory of D-modules. For the
so-called completely integrable systems (Janet Systems), we show that the higher Ext groups
are null},
publisher = {Elsevier},
keywords = {D-modules},
keywords = {completely integrable system},
keywords = {Differential Operators},
title = {Ext groups of Janet systems},
doi = {10.1016/S0022-4049(02)00331-6},
author = {Moreno Frías, María Ángeles},
}