Liya Fan. Weak quasi-invexity of nonsmooth functions. Appl. Math. Lett., 21(11):1112-1117, 2008. [doi]
@article{Fan08:0, title = {Weak quasi-invexity of nonsmooth functions}, author = {Liya Fan}, year = {2008}, doi = {10.1016/j.aml.2007.12.010}, url = {http://dx.doi.org/10.1016/j.aml.2007.12.010}, researchr = {https://researchr.org/publication/Fan08%3A0}, cites = {0}, citedby = {0}, journal = {Appl. Math. Lett.}, volume = {21}, number = {11}, pages = {1112-1117}, }