Antunes de Oliveira, V., Rojas Medar, M. A., & Vieira Brandão A. J. (2017). A note on kkt-invexity in nonsmooth continuous-time optimization. Proyecciones (Antofagasta, On Line), 26(3), 269-279. https://doi.org/10.4067/S0716-09172007000300005