Ramírez-Núñez, M. and Valverde-Calderón, J.F. (2015) “ALTERNATIVE SOLUTION FOR DIRECT TRANSFORMATION OF GEOGRAPHIC INFORMATION: THE CASE OF COSTA RICA CHANGING THE OFFICIAL SYSTEM OF COORDINATES (LAMBERT TO CRTM05)”, Geographical Journal of Central America, 2(53), pp. 15–38. doi:10.15359/rgac.2-53.1.