Calvo Cruz, M. and Castro Pérez, C. (2010) “Accounting of the building works of the Port of la Luz y Las Palmas (Canary Islands, Spain) analyzed through the study of its director the engineer Juan de León y Castillo, 19th and 20th Centuries”, De Computis, 7(13), pp. 3–40. doi: 10.26784/issn.1886-1881.v7i13.115.