| article html file updated | 7 February 2020 22:40 CET | Update | https://www.mdpi.com/1996-1073/10/2/171 |
| article html file updated | 23 September 2019 03:52 CEST | Update | N/A |
| article html file updated | 4 May 2019 12:43 CEST | Update | N/A |
| article html file updated | 28 February 2017 10:25 CET | Update | N/A |
| article html file updated | 4 February 2017 10:40 CET | Original file | N/A |
| article xml uploaded. | 4 February 2017 10:38 CET | Original file | https://www.mdpi.com/1996-1073/10/2/171/xml |
| article pdf uploaded. | 4 February 2017 10:38 CET | Version of Record | https://www.mdpi.com/1996-1073/10/2/171/pdf |
