Literatuur
- Marta, Roberto, Tecnica Costruttiva Romana / Roman Building techniques (tweetalig handboek met onder meer definities van de begrippen). Roma (Edizioni Kappa), 1991cop. [98 blz. ISBN 88.7890.034.6]. Hierin "Opus craticium": blz. 24-25 ("Wall or partition made of a wooden framework with the intervening spaces filled with stones and cement, and then plastered. This method is still used today in many buildings in mountainous regions not only in Italy but also in whole areas throughout in Europe")