Robust static output feedback control using a Particle Swarm Optimization-DE-linear matrix inequality algorithm hybrid algorithm. - IlGon Ho; YongHyok Ri (CoRR, 2016)

Existence of positive solutions of a class of multi-point boundary value problems for p-Laplacian fractional differential equations with singular source terms. - KumSong Jong; Huichol Choi; YongHyok Ri (Commun. Nonlinear Sci. Numer. Simul., 2019)