| article html file updated | 8 February 2020 03:02 CET | Update | https://www.mdpi.com/1996-1073/10/4/493 |
| article html file updated | 24 September 2019 04:45 CEST | Update | - |
| article html file updated | 4 May 2019 03:17 CEST | Update | - |
| article html file updated | 28 April 2017 06:09 CEST | Update | - |
| article html file updated | 7 April 2017 11:07 CEST | Original file | - |
| article xml uploaded. | 7 April 2017 11:06 CEST | Update | https://www.mdpi.com/1996-1073/10/4/493/xml |
| article pdf uploaded. | 7 April 2017 11:06 CEST | Updated version of record | https://www.mdpi.com/1996-1073/10/4/493/pdf |
| article pdf uploaded. | 6 April 2017 14:09 CEST | Version of Record | https://www.mdpi.com/1996-1073/10/4/493/pdf-vor |
