Registered users receive a variety of benefits including the ability to customize email alerts, create favorite journals list, and save searches.
Please note that a Project Euclid web account does not automatically grant access to full-text content. An institutional or society member subscription is required to view non-Open Access content.
Contact customer_support@projecteuclid.org with any questions.
View Project Euclid Privacy Policy
Wataru Ichinose "Propagation of singularities for a hyperbolic system with double characteristics," Osaka Journal of Mathematics, Osaka J. Math. 19(1), 171-187, (1982)
