| article html file updated | 8 February 2020 06:57 CET | Update | https://www.mdpi.com/1996-1073/10/6/757 |
| article html file updated | 25 September 2019 01:38 CEST | Update | - |
| article html file updated | 3 May 2019 19:57 CEST | Update | - |
| article html file updated | 27 June 2017 10:09 CEST | Update | - |
| article html file updated | 1 June 2017 10:06 CEST | Original file | - |
| article xml uploaded. | 1 June 2017 10:05 CEST | Original file | https://www.mdpi.com/1996-1073/10/6/757/xml |
| article pdf uploaded. | 1 June 2017 10:05 CEST | Updated version of record | https://www.mdpi.com/1996-1073/10/6/757/pdf |
| article pdf uploaded. | 29 May 2017 11:09 CEST | Version of Record | https://www.mdpi.com/1996-1073/10/6/757/pdf-vor |
