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.
Rubens Viana Ramos, Anders Karlsson. 2systems. Quantum Information & Computation, 2(3):222-239, 2002. [doi]
Abstract is missing.