| article html file updated | 7 February 2020 22:41 CET | Update | https://www.mdpi.com/1996-1073/10/2/176 |
| article html file updated | 23 September 2019 04:00 CEST | Update | - |
| article html file updated | 4 May 2019 12:41 CEST | Update | - |
| article html file updated | 28 February 2017 10:26 CET | Update | - |
| article html file updated | 4 February 2017 11:33 CET | Original file | - |
| article xml uploaded. | 4 February 2017 11:32 CET | Original file | https://www.mdpi.com/1996-1073/10/2/176/xml |
| article pdf uploaded. | 4 February 2017 11:32 CET | Version of Record | https://www.mdpi.com/1996-1073/10/2/176/pdf |
