| article html file updated | 9 February 2020 13:08 CET | Update | https://www.mdpi.com/1999-4907/9/4/195 |
| article html file updated | 2 October 2019 10:40 CEST | Update | - |
| article html file updated | 1 May 2019 04:51 CEST | Update | - |
| article html file updated | 17 April 2019 05:05 CEST | Update | - |
| article html file updated | 29 March 2019 14:07 CET | Update | - |
| article html file updated | 1 May 2018 11:32 CEST | Update | - |
| article html file updated | 10 April 2018 05:21 CEST | Original file | - |
| article xml uploaded. | 10 April 2018 05:20 CEST | Original file | https://www.mdpi.com/1999-4907/9/4/195/xml |
| article pdf uploaded. | 10 April 2018 05:20 CEST | Version of Record | https://www.mdpi.com/1999-4907/9/4/195/pdf |
