| article html file updated | 6 February 2020 19:55 CET | Update | https://www.mdpi.com/2227-9717/3/2/471 |
| article html file updated | 6 May 2019 17:18 CEST | Update | N/A |
| article html file updated | 26 March 2019 05:10 CET | Update | N/A |
| article html file updated | 21 August 2015 13:58 CEST | Update | N/A |
| article html file updated | 17 July 2015 12:13 CEST | Original file | N/A |
| article xml file uploaded | 17 July 2015 12:13 CEST | Original file | https://www.mdpi.com/2227-9717/3/2/471/xml |
| article pdf uploaded. | 19 June 2015 14:01 CEST | Version of Record | https://www.mdpi.com/2227-9717/3/2/471/pdf |
