| article html file updated | 9 February 2020 10:10 CET | Update | https://www.mdpi.com/2227-7080/6/1/34 |
| article html file updated | 1 October 2019 17:09 CEST | Update | - |
| article html file updated | 1 May 2019 11:03 CEST | Update | - |
| article html file updated | 17 April 2019 10:53 CEST | Update | - |
| article html file updated | 29 March 2019 07:16 CET | Update | - |
| article html file updated | 28 March 2018 04:24 CEST | Update | - |
| article html file updated | 27 March 2018 16:54 CEST | Update | - |
| article html file updated | 19 March 2018 12:07 CET | Original file | - |
| article xml uploaded. | 19 March 2018 12:06 CET | Original file | https://www.mdpi.com/2227-7080/6/1/34/xml |
| article pdf uploaded. | 19 March 2018 12:06 CET | Updated version of record | https://www.mdpi.com/2227-7080/6/1/34/pdf |
| article pdf uploaded. | 16 March 2018 17:40 CET | Version of Record | https://www.mdpi.com/2227-7080/6/1/34/pdf-vor |
