Eigenvalue assignments and the two largest multiplicities in a Hermitian matrix whose graph is a tree. - Charles R. Johnson; Christopher Jordan-Squire; David A. Sher (Discret. Appl. Math., 2010)

Uniform Enclosures for the Phase and Zeros of Bessel Functions and their Derivatives. - Nikolay Filonov; Michael Levitin; Iosif Polterovich; David A. Sher (SIAM J. Math. Anal., 2024)