| article html file updated | 9 February 2020 05:07 CET | Update | https://www.mdpi.com/1996-1073/11/2/307 |
| article html file updated | 30 September 2019 10:07 CEST | Update | - |
| article html file updated | 1 May 2019 21:52 CEST | Update | - |
| article html file updated | 17 April 2019 20:40 CEST | Update | - |
| article html file updated | 28 March 2019 20:03 CET | Update | - |
| article html file updated | 14 March 2018 15:36 CET | Update | - |
| article html file updated | 1 February 2018 06:57 CET | Original file | - |
| article xml uploaded. | 1 February 2018 06:56 CET | Update | https://www.mdpi.com/1996-1073/11/2/307/xml |
| article xml uploaded. | 1 February 2018 06:56 CET | Original file | - |
| article pdf uploaded. | 1 February 2018 06:56 CET | Version of Record | https://www.mdpi.com/1996-1073/11/2/307/pdf |
