| article html file updated | 8 February 2020 03:21 CET | Update | https://www.mdpi.com/1996-1073/10/4/517 |
| article html file updated | 24 September 2019 06:26 CEST | Update | - |
| article html file updated | 4 May 2019 02:40 CEST | Update | - |
| article html file updated | 28 April 2017 06:15 CEST | Update | - |
| article html file updated | 13 April 2017 04:32 CEST | Original file | - |
| article xml uploaded. | 13 April 2017 04:30 CEST | Original file | https://www.mdpi.com/1996-1073/10/4/517/xml |
| article pdf uploaded. | 13 April 2017 04:30 CEST | Updated version of record | https://www.mdpi.com/1996-1073/10/4/517/pdf |
| article pdf uploaded. | 11 April 2017 15:41 CEST | Version of Record | https://www.mdpi.com/1996-1073/10/4/517/pdf-vor |
