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.
Wesley Calvert. PAC learning, VC dimension, and the arithmetic hierarchy. Arch. Math. Log., 54(7-8):871-883, 2015. [doi]
Abstract is missing.