| article html file updated | 9 February 2020 11:54 CET | Update | https://www.mdpi.com/1999-4907/9/4/177 |
| article html file updated | 2 October 2019 03:15 CEST | Update | - |
| article html file updated | 1 May 2019 07:21 CEST | Update | - |
| article html file updated | 17 April 2019 07:21 CEST | Update | - |
| article html file updated | 29 March 2019 11:17 CET | Update | - |
| article html file updated | 1 May 2018 11:26 CEST | Update | - |
| article html file updated | 30 March 2018 10:14 CEST | Update | - |
| article xml uploaded. | 30 March 2018 10:12 CEST | Update | https://www.mdpi.com/1999-4907/9/4/177/xml |
| article pdf uploaded. | 30 March 2018 10:12 CEST | Updated version of record | https://www.mdpi.com/1999-4907/9/4/177/pdf |
| article html file updated | 30 March 2018 10:07 CEST | Original file | - |
