| article html file updated | 7 February 2020 20:17 CET | Update | https://www.mdpi.com/1996-1073/10/1/21 |
| article html file updated | 22 September 2019 15:04 CEST | Update | N/A |
| article html file updated | 4 May 2019 17:52 CEST | Update | N/A |
| article html file updated | 7 February 2017 09:28 CET | Update | N/A |
| article html file updated | 24 December 2016 11:42 CET | Update | N/A |
| article xml uploaded. | 24 December 2016 11:41 CET | Update | https://www.mdpi.com/1996-1073/10/1/21/xml |
| article xml uploaded. | 24 December 2016 11:41 CET | Update | N/A |
| article pdf uploaded. | 24 December 2016 11:41 CET | Updated version of record | https://www.mdpi.com/1996-1073/10/1/21/pdf |
| article html file updated | 24 December 2016 11:37 CET | Original file | N/A |
| article xml uploaded. | 24 December 2016 11:35 CET | Original file | N/A |
| article pdf uploaded. | 24 December 2016 11:35 CET | Version of Record | N/A |