| article html file updated | 6 February 2020 15:40 CET | Update | https://www.mdpi.com/1999-4915/7/2/511 |
| article html file updated | 7 May 2019 01:30 CEST | Update | N/A |
| article html file updated | 25 March 2019 21:18 CET | Update | N/A |
| article html file updated | 21 August 2015 07:00 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/1999-4915/7/2/511/xml |
| article pdf uploaded. | 3 February 2015 13:34 CET | Version of Record | https://www.mdpi.com/1999-4915/7/2/511/pdf |
