| article html file updated | 6 February 2020 15:35 CET | Update | https://www.mdpi.com/1999-4915/7/2/480 |
| article html file updated | 7 May 2019 01:41 CEST | Update | N/A |
| article html file updated | 25 March 2019 21:09 CET | Update | N/A |
| article html file updated | 21 August 2015 06:45 CEST | Update | N/A |
| article html file updated | 10 March 2015 03:30 CET | Original file | N/A |
| article xml file uploaded | 10 March 2015 03:30 CET | Original file | https://www.mdpi.com/1999-4915/7/2/480/xml |
| article pdf uploaded. | 29 January 2015 13:45 CET | Version of Record | https://www.mdpi.com/1999-4915/7/2/480/pdf |
