Published in Bollettino del Laboratorio in Portici, in 1917, in volume 12, pages 147-154

Published in Bollettino del Laboratorio in Portici, in 1917, in volume 12, pages 155-174

Published in Bollettino del Laboratorio in Portici, in 1917, in volume 12, pages 188-210

Published in Bollettino del Laboratorio in Portici, in 1917, in volume 12, pages 245-251

Published in Bollettino del Laboratorio in Portici, in 1917, in volume 12, pages 252-265

Published in Bollettino del Laboratorio in Portici, in 1917, in volume 12, pages 272-274

Published in Bollettino del Laboratorio in Portici, in 1917, in volume 12, pages 287-346

Published in Bollettino del Laboratorio in Portici, in 1917, in volume 12, pages 347-351