| article html file updated | 14 August 2026 19:44 CEST | Update | https://www.mdpi.com/1996-1073/10/12/1989 |
| article html file updated | 8 February 2020 22:52 CET | Update | N/A |
| article html file updated | 28 September 2019 22:10 CEST | Update | N/A |
| article html file updated | 2 May 2019 11:14 CEST | Update | N/A |
| article html file updated | 18 April 2019 08:52 CEST | Update | N/A |
| article html file updated | 2 January 2018 18:57 CET | Update | N/A |
| article html file updated | 1 December 2017 17:26 CET | Original file | N/A |
| article xml uploaded. | 1 December 2017 17:25 CET | Update | https://www.mdpi.com/1996-1073/10/12/1989/xml |
| article xml uploaded. | 1 December 2017 17:25 CET | Original file | N/A |
| article pdf uploaded. | 1 December 2017 17:25 CET | Version of Record | https://www.mdpi.com/1996-1073/10/12/1989/pdf |
