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.
Huixian Wu, Hezhi Luo. D-η-Properly Prequasi-Invex Function. J. Systems Science & Complexity, 20(4):614-622, 2007. [doi]