, Swedish Hydrographic Office. «Method for Transferring a Chart Picture Engraved on a Copper Plate to a Plastic Film As an Original for Platemaking for Offset Printing». The International Hydrographic Review, no. 2 (marzo 27, 2018). Accedido septiembre 27, 2024. https://journals.lib.unb.ca/index.php/ihr/article/view/26502.