Castañeda, Ángel E., Cobelo, W., González, Y. and Álvarez, J. 2011. A look at half a century of shells foundations, methods of calculation and associate research in Cuba. Revista Ingeniería de Construcción. 26, 3 (Dec. 2011), 245–268. DOI:https://doi.org/10.4067/S0718-50732011000300001.