Researchr is a web site for finding, collecting, sharing, and reviewing scientific publications, for researchers by researchers.
Sign up for an account to create a profile with publication list, tag and review your related work, and share bibliographies with your co-authors.
Alexander G. Ramm. Symmetry problems for the Helmholtz equation. Appl. Math. Lett., 96:122-125, 2019. [doi]
Abstract is missing.