Simbolon, S. C. R., S. P. Tampubolon, and A. S. Mulyani. “PERFORMANCE ANALYSIS OF HORIZONTAL IRREGULAR BUILDINGS BASED ON RESPONS SPECTRUM AND TIME HISTORY METHODE”. Jurnal Pensil : Pendidikan Teknik Sipil, Vol. 12, no. 3, Sept. 2023, pp. 363 -74, doi:10.21009/jpensil.v12i3.37850.