Pongsakorn Yotkaew. 2017. Some nonlinear problems in a complete geodesic space with curvature bounded above. Khon Kaen:Khon Kaen University;
Pongsakorn Yotkaew. (2017) Some nonlinear problems in a complete geodesic space with curvature bounded above (รายงานผลงานวิจัย). Khon Kaen University:Khon Kaen.
Pongsakorn Yotkaew. Some nonlinear problems in a complete geodesic space with curvature bounded above. Khon Kaen:Khon Kaen University, 2017.
Pongsakorn Yotkaew. (2017) Some nonlinear problems in a complete geodesic space with curvature bounded above (รายงานผลงานวิจัย). Khon Kaen University:Khon Kaen.