| article html file updated | 7 February 2020 22:56 CET | Update | https://www.mdpi.com/2218-2004/5/1/7 |
| article html file updated | 23 September 2019 05:28 CEST | Update | - |
| article html file updated | 4 May 2019 12:09 CEST | Update | - |
| article html file updated | 27 March 2017 09:41 CEST | Update | - |
| article html file updated | 10 February 2017 08:51 CET | Original file | - |
| article xml uploaded. | 10 February 2017 08:50 CET | Original file | https://www.mdpi.com/2218-2004/5/1/7/xml |
| article pdf uploaded. | 10 February 2017 08:50 CET | Updated version of record | https://www.mdpi.com/2218-2004/5/1/7/pdf |
| article pdf uploaded. | 8 February 2017 17:09 CET | Version of Record | https://www.mdpi.com/2218-2004/5/1/7/pdf-vor |
