| article html file updated | 9 February 2020 01:04 CET | Update | https://www.mdpi.com/1996-1073/11/1/15 |
| article html file updated | 29 September 2019 10:57 CEST | Update | - |
| article html file updated | 2 May 2019 06:25 CEST | Update | - |
| article html file updated | 18 April 2019 04:22 CEST | Update | - |
| article html file updated | 28 March 2019 10:50 CET | Update | - |
| article html file updated | 1 February 2018 09:22 CET | Update | - |
| article html file updated | 23 December 2017 22:54 CET | Original file | - |
| article xml uploaded. | 23 December 2017 14:03 CET | Update | https://www.mdpi.com/1996-1073/11/1/15/xml |
| article xml uploaded. | 23 December 2017 14:03 CET | Original file | - |
| article pdf uploaded. | 23 December 2017 14:03 CET | Version of Record | https://www.mdpi.com/1996-1073/11/1/15/pdf |
