Antonio Piga, Pasquale Catzeddu, Stefano Farris, Tonina Roggio, Annamaria Sanguinetti, Efisio Scano,
Texture evolution of “Amaretti” cookies during storage European Food Research and Technology. ,vol. 221, pp. 387- 391 ,(2005) ,
10.1007/S00217-005-1185-5