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.
Henrik Bettermann, Peter Van Leeuwen. Evidence of phase transitions in heart period dynamics. Biological Cybernetics, 78(1):63-70, 1998. [doi]
Abstract is missing.