@inbook{DAgnoloZampieri+1993+25+36,
url = {https://doi.org/10.1515/9783110856033.25},
title = {Generalized Levi forms for microdifferential Systems},
booktitle = {D-Modules and Microlocal Geometry},
booktitle = {Proceedings of the International Conference on D-Modules and Microlocal Geometry held at the University of Lisbon (Portugal), October 29-November 2, 1990},
author = {Andrea D'Agnolo and Giuseppe Zampieri},
editor = {Masaki Kashiwara and Teresa Monteiro Fernandes and Pierre Schapira},
publisher = {De Gruyter},
address = {Berlin, New York},
pages = {25--36},
doi = {doi:10.1515/9783110856033.25},
isbn = {9783110856033},
year = {1993},
lastchecked = {2026-05-04}
}