1. REGULATION (EU) 2016/425 OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 9 March 2016 on personal protective equipment and repealing Council Directive 89/686/EEC, Official Journal of the European Union, 31.3.2016, L 81/98.
2. National Institute for Occupational Safety and Health (NIOSH). NIOSH guide to the selection and use of particulate respirators certified under 42 CFR 84 (96-101) [Internet]; [cited 2015 Jul 29]. Available from: http://www.cdc.gov/niosh/docs/96-101/