| article html file updated | 7 February 2020 22:00 CET | Update | https://www.mdpi.com/2227-9091/5/1/7 |
| article html file updated | 23 September 2019 00:18 CEST | Update | - |
| article html file updated | 4 May 2019 14:02 CEST | Update | - |
| article html file updated | 29 March 2017 05:53 CEST | Update | - |
| article html file updated | 25 January 2017 09:52 CET | Update | - |
| article xml uploaded. | 25 January 2017 09:51 CET | Update | https://www.mdpi.com/2227-9091/5/1/7/xml |
| article xml uploaded. | 25 January 2017 09:51 CET | Update | - |
| article pdf uploaded. | 25 January 2017 09:51 CET | Updated version of record | https://www.mdpi.com/2227-9091/5/1/7/pdf |
| article html file updated | 22 January 2017 11:15 CET | Original file | - |
| article xml uploaded. | 22 January 2017 11:14 CET | Original file | - |
| article pdf uploaded. | 22 January 2017 11:14 CET | Version of Record | https://www.mdpi.com/2227-9091/5/1/7/pdf-vor |
