TY - BOOK AU - Keimel,Klaus AU - Roth,Walter,1947- TI - Ordered cones and approximation SN - 3540554459 PY - 1992/// CY - Berlin PB - Springer-Verlag KW - Cones (Operator theory) KW - Approximation theory N1 - Includes bibliographical references (p. 129-132) and index ER -