| article html file updated | 8 February 2020 02:49 CET | Update | https://www.mdpi.com/1996-1073/10/4/477 |
| article html file updated | 24 September 2019 03:34 CEST | Update | - |
| article html file updated | 4 May 2019 03:46 CEST | Update | - |
| article html file updated | 28 April 2017 06:05 CEST | Update | - |
| article html file updated | 6 April 2017 07:20 CEST | Original file | - |
| article xml uploaded. | 6 April 2017 07:18 CEST | Original file | https://www.mdpi.com/1996-1073/10/4/477/xml |
| article pdf uploaded. | 6 April 2017 07:18 CEST | Updated version of record | https://www.mdpi.com/1996-1073/10/4/477/pdf |
| article pdf uploaded. | 3 April 2017 09:37 CEST | Version of Record | https://www.mdpi.com/1996-1073/10/4/477/pdf-vor |
