FAHAD M. ABDULKARIM, HASAN HUSSEIN ALI, MOHAMMED H. MOHAMMED, A. H. A.-Z. A. H. A. A.-A. Effect of Vertical Irregularity in Multi-Storied Building Under Seismic Loading. Design Engineering, v. 2021, n. 3, p. 47 - 59, 7 Apr. 2021.