A. BABU ARUMUGAM, V. RAJAMOHAN, N. BANDARU, E. SUDHAGAR P., and S. G. KUMBHAR, “Vibration Analysis of a Carbon Nanotube Reinforced Uniform and Tapered Composite Beams”, Arch. Acoust., vol. 44, no. 2, pp. 309–320, Apr. 2019, doi: 10.24425/aoa.2019.128494.