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
Mitio Nagumo "On principally linear elliptic differential equations of the second order," Osaka Mathematical Journal, Osaka Math. J. 6(2), 207-229, (1954)
