| article html file updated | 8 February 2020 02:54 CET | Update | https://www.mdpi.com/1996-1073/10/4/487 |
| article html file updated | 24 September 2019 03:59 CEST | Update | - |
| article html file updated | 4 May 2019 03:36 CEST | Update | - |
| article html file updated | 28 April 2017 06:08 CEST | Update | - |
| article html file updated | 7 April 2017 04:11 CEST | Original file | - |
| article xml uploaded. | 7 April 2017 04:10 CEST | Update | https://www.mdpi.com/1996-1073/10/4/487/xml |
| article pdf uploaded. | 7 April 2017 04:10 CEST | Updated version of record | https://www.mdpi.com/1996-1073/10/4/487/pdf |
| article pdf uploaded. | 4 April 2017 14:01 CEST | Version of Record | https://www.mdpi.com/1996-1073/10/4/487/pdf-vor |
