| article html file updated | 7 February 2020 23:18 CET | Update | https://www.mdpi.com/1996-1073/10/2/217 |
| article html file updated | 23 September 2019 07:26 CEST | Update | - |
| article html file updated | 4 May 2019 11:25 CEST | Update | - |
| article html file updated | 28 February 2017 10:37 CET | Update | - |
| article html file updated | 14 February 2017 04:53 CET | Original file | - |
| article xml uploaded. | 14 February 2017 04:51 CET | Original file | https://www.mdpi.com/1996-1073/10/2/217/xml |
| article pdf uploaded. | 14 February 2017 04:51 CET | Updated version of record | https://www.mdpi.com/1996-1073/10/2/217/pdf |
| article pdf uploaded. | 13 February 2017 16:24 CET | Version of Record | https://www.mdpi.com/1996-1073/10/2/217/pdf-vor |
