| article html file updated | 9 February 2020 01:33 CET | Update | https://www.mdpi.com/1996-1073/11/1/63 |
| article html file updated | 29 September 2019 13:48 CEST | Update | - |
| article html file updated | 2 May 2019 05:21 CEST | Update | - |
| article html file updated | 18 April 2019 03:23 CEST | Update | - |
| article html file updated | 28 March 2019 12:03 CET | Update | - |
| article html file updated | 1 February 2018 10:39 CET | Update | - |
| article html file updated | 29 December 2017 16:44 CET | Original file | - |
| article xml uploaded. | 29 December 2017 16:43 CET | Original file | https://www.mdpi.com/1996-1073/11/1/63/xml |
| article pdf uploaded. | 29 December 2017 16:43 CET | Version of Record | https://www.mdpi.com/1996-1073/11/1/63/pdf |