In the 1930s, the reputation of the cuts was more commonly known in Italy and abroad, so that between 1935 and 1937 an extensive campaign of studies was conducted by Germans Franz Altheim and Erika Trautmann.
Pada tahun 1930-an, reputasi ukiran telah lebih banyak dikenal di Italia dan luar negeri, sehingga antara tahun 1935 dan 1937 dilakukan kajian secara luas oleh Franz Altheim dan Erika Trautmann dari Jerman.