Sae-Long, W.; Panedpojaman, P.; Damrongwiriyanupap, N.; Limkatanyu, S.; Chaimahawan, P.; Janwaen, W.; Buakla, A. A Study of the Increase in In-Plane Flexural Capacity of Cellular Steel Sections Based on EN1993-1-1 and ANSI/AISC 360-10 Codes. RMUTI Journal 2021, 14, 1-17.