| article html file updated | 9 February 2020 05:57 CET | Update | https://www.mdpi.com/1996-1073/11/2/391 |
| article html file updated | 30 September 2019 15:22 CEST | Update | - |
| article html file updated | 1 May 2019 19:58 CEST | Update | - |
| article html file updated | 17 April 2019 19:05 CEST | Update | - |
| article html file updated | 28 March 2019 21:52 CET | Update | - |
| article html file updated | 14 March 2018 16:11 CET | Update | - |
| article html file updated | 8 February 2018 12:54 CET | Original file | - |
| article xml uploaded. | 8 February 2018 12:53 CET | Update | https://www.mdpi.com/1996-1073/11/2/391/xml |
| article xml uploaded. | 8 February 2018 12:53 CET | Original file | - |
| article pdf uploaded. | 8 February 2018 12:53 CET | Version of Record | https://www.mdpi.com/1996-1073/11/2/391/pdf |
