| article html file updated | 7 February 2020 10:34 CET | Update | https://www.mdpi.com/1999-4915/8/6/172 |
| article html file updated | 5 May 2019 12:11 CEST | Update | - |
| article html file updated | 27 March 2019 08:11 CET | Update | - |
| article html file updated | 29 June 2016 10:20 CEST | Update | - |
| article html file updated | 23 June 2016 09:07 CEST | Update | - |
| article xml uploaded. | 23 June 2016 09:06 CEST | Update | https://www.mdpi.com/1999-4915/8/6/172/xml |
| article pdf uploaded. | 23 June 2016 09:06 CEST | Updated version of record | https://www.mdpi.com/1999-4915/8/6/172/pdf |
| article html file updated | 22 June 2016 10:45 CEST | Original file | - |
| article pdf uploaded. | 22 June 2016 10:44 CEST | Version of Record | https://www.mdpi.com/1999-4915/8/6/172/pdf-vor |
