1. JGCM 200:2008, International Vocabulary of Metrology – Basic and General Concepts and Associated Terms (VIM), Joint Committee for Guides in Metrology, Sèvres, 2008; with corrections (JCGM 200:2008 Corrigendum, May 2010), .
2. Problems of measurement in soft systems;Finkelstein;Measurement,2005
3. Measurement in soft systems: epistemological framework and a case study;Mari;Measurement,2009
4. Widely, strongly and weakly defined measurement;Finkelstein;Measurement,2003
5. Corso di fisica;Amaldi,1970