2 joint papers of Shai Ben David with Shelah

BdSh:236
Ben David+Shelah, Nonspecial Aronszajn trees on $\aleph_ {\omega+1}$ -- Israel J Math 53 (1986) 93-96
BdSh:203
Ben David+Shelah, Souslin trees and successors of singular cardinals -- Annals Pure and Applied Logic 30 (1986) 207-217