Rodríguez Cabal, M. Ángel, L. F. Grisales Noreña, C. A. Ramírez Vanegas, and A. Arias Londoño. “Application of the Sine-Cosine Algorithm to the Optimal Design of a Closed Coil Helical Spring”. Transactions on Energy Systems and Engineering Applications, vol. 2, no. 2, Jan. 2022, pp. 33-38, doi:10.32397/tesea.vol2.n2.5.