N. Lagadapati, M. Karri, T. Vaddineni, S. Mahaboob Subhani, and K. Hari Kishore, “A VLSI implementation of elevator control based on finite state machine using Verilog HDL”, IJET, vol. 7, no. 2.8, pp. 92–96, Mar. 2018, doi: 10.14419/ijet.v7i2.8.10337.