A .J. De Feyter, N. Molenaar, G. Pialli, M. Menichetti, and F. Veneri. 1990. “Palaeotectonic Significance of Gravity Displacement Structures in the Miocene Turbidite Series of the M. Pollo Syncline (Umbro-Marchean Apennines, Italy)”. Netherlands Journal of Geosciences, January, 69-86. https://njgjournal.nl/index.php/njg/article/view/12853.