Links
	1.		Allergia al nichel: sintomi, cura [https://www.farmacoecura.it/malattie/allergia-nichel-sintomi-alimenti/]
	2.		Allergia al nichel [https://www.humanitas.it/malattie/allergia-al-nichel]
	3.		Allergia al Nichel: i 10 sintomi più comuni [https://www.greenme.it/vivere/salute-e-benessere/allergia-nichel-sintomi-1/]
	4.		Intolleranza al nichel: la guida completa [https://www.nonnapaperina.it/intolleranza-al-nichel/]
	5.		Allergia al nichel: sintomi, cause e cura [https://www.valorinormali.com/malattie/allergia-nichel/]
	6.		DIRETTIVA 94/27/CE DEL PARLAMENTO EUROPEO E DEL CONSIGLIO del 30 giugno 1994 [PDF] [https://eur-lex.europa.eu/legal-content/IT/TXT/PDF/?uri=CELEX:31994L0027&from=IT]
	7.		EU Nickel Release - New Official Test Methods [inglese] [http://www.intertek.com/uploadedFiles/Intertek/Divisions/Consumer_Goods/Media/ PDFs/Sparkles/2012/sparkle623.pdf]
	8.		Electronic guide to nickel issue [inglese] [http://www.teg.co.uk/nickel/index.php]
	9.		Contact sensitivity to metals (chromium, cobalt and nickel) in childhood [inglese] An. Bras. Dermatol. 87,2 (2012) [http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0365-05962012000200012]
	10.		Nickel: A Review of Its Sources and Environmental Toxicology [inglese] [download/375-382.pdf]
	11.		Sensitivity and specificity of the nickel spot (dimethylglyoxime) test [inglese] [http://onlinelibrary.wiley.com/doi/10.1111/j.1600-0536.2010.01709.x/abstract; jsessionid=0DD8F0AE4687492F3899FF2E76AB7DA2.f04t01]
	12.		The EU nickel directive [inglese] [http://en.wikipedia.org/wiki/Nickel_Directive]
	13.		Nickel Allergy [inglese] [https://www.mayoclinic.org/diseases-conditions/nickel-allergy/symptoms-causes/syc-20351529]
	14.		Nickel allergy following European Union regulation in Denmark, Germany, Italy and the U.K. [inglese] [Br J Dermatol. 2013 Oct;169(4):854-8. doi: 10.1111/bjd.12556] [http://www.ncbi.nlm.nih.gov/pubmed/23909687]