| article html file updated | 8 February 2020 03:45 CET | Update | https://www.mdpi.com/1996-1073/10/4/550 |
| article html file updated | 24 September 2019 08:42 CEST | Update | - |
| article html file updated | 4 May 2019 01:54 CEST | Update | - |
| article html file updated | 28 April 2017 06:24 CEST | Update | - |
| article html file updated | 25 April 2017 05:46 CEST | Original file | - |
| article xml uploaded. | 25 April 2017 05:44 CEST | Original file | https://www.mdpi.com/1996-1073/10/4/550/xml |
| article pdf uploaded. | 25 April 2017 05:44 CEST | Updated version of record | https://www.mdpi.com/1996-1073/10/4/550/pdf |
| article pdf uploaded. | 17 April 2017 13:39 CEST | Version of Record | https://www.mdpi.com/1996-1073/10/4/550/pdf-vor |
