@article{reiland_1990, title={Nonsmooth invexity}, volume={42}, ISSN={0004-9727 1755-1633}, url={http://dx.doi.org/10.1017/S0004972700028604}, DOI={10.1017/S0004972700028604}, abstractNote={The concept of invexity is extended to nondifferentiable functions. Characterisations of nonsmooth invexity are derived as well as results in unconstrained and constrained optimisation and duality. The principal analytic tool is the generalised gradient of Clarke for Lipschitz functions.}, number={3}, journal={Bulletin of the Australian Mathematical Society}, publisher={Cambridge University Press (CUP)}, author={Reiland, Thomas W.}, year={1990}, month={Dec}, pages={437–446} }
 @article{reiland_1989, title={Generalized differentiability for a class of nondifferentiable operators with applications to nonsmooth optimization}, volume={47}, ISSN={0263-6115}, url={http://dx.doi.org/10.1017/S144678870003127X}, DOI={10.1017/S144678870003127X}, abstractNote={Abstract}, number={1}, journal={Journal of the Australian Mathematical Society. Series A. Pure Mathematics and Statistics}, publisher={Cambridge University Press (CUP)}, author={Reiland, Thomas W.}, year={1989}, month={Aug}, pages={114–132} }