| article html file updated | 16 September 2021 07:54 CEST | Update | https://www.mdpi.com/2076-3921/6/1/7 |
| article html file updated | 7 February 2020 21:46 CET | Update | - |
| article html file updated | 22 September 2019 23:03 CEST | Update | - |
| article html file updated | 4 May 2019 14:32 CEST | Update | - |
| article html file updated | 29 March 2017 08:18 CEST | Update | - |
| article html file updated | 23 January 2017 09:54 CET | Update | - |
| article xml uploaded. | 23 January 2017 09:53 CET | Update | https://www.mdpi.com/2076-3921/6/1/7/xml |
| article pdf uploaded. | 23 January 2017 09:53 CET | Updated version of record | https://www.mdpi.com/2076-3921/6/1/7/pdf |
| article html file updated | 19 January 2017 12:27 CET | Original file | - |
| article xml uploaded. | 19 January 2017 12:25 CET | Original file | - |
| article pdf uploaded. | 19 January 2017 12:25 CET | Version of Record | https://www.mdpi.com/2076-3921/6/1/7/pdf-vor |
