http://en.wikipedia.org/wiki/Units_conversion_by_factor-label#Limitations
http://64.233.183.104/search?q=cache:RzTgygCsVM8J:www.dti.unimi.it/~castellano/Continuo_2_9.doc+analisi+dimensionale+temperatura&hl=en&ct=clnk&cd=11
fisica teorica?
http://www.fisicamente.net/index-1086.htm
http://209.85.135.104/search?q=cache:kwN5H89hyQ0J:ppp.unipv.it/Silsis/Pagine/Corso1/PDF_Files/2a%2520lez/2a%2520lez%2520Art/FIS_SPME.pdf+fisica+teorica+e+fisica+matematica+bellone&hl=en&ct=clnk&cd=2