| article html file updated | 6 February 2020 15:41 CET | Update | https://www.mdpi.com/1999-4915/7/2/522 |
| article html file updated | 7 May 2019 01:30 CEST | Update | - |
| article html file updated | 25 March 2019 21:19 CET | Update | - |
| article html file updated | 21 August 2015 07:00 CEST | Update | - |
| article html file updated | 10 March 2015 03:30 CET | Update | - |
| article xml file uploaded | 10 March 2015 03:30 CET | Update | https://www.mdpi.com/1999-4915/7/2/522/xml |
| article html file updated | 10 February 2015 03:53 CET | Original file | - |
| article xml file uploaded | 10 February 2015 03:53 CET | Original file | - |
| article pdf uploaded. | 9 February 2015 15:15 CET | Updated version of record | https://www.mdpi.com/1999-4915/7/2/522/pdf |
| article pdf uploaded. | 3 February 2015 13:38 CET | Version of Record | https://www.mdpi.com/1999-4915/7/2/522/pdf-vor |
