| article html file updated | 8 February 2020 07:11 CET | Update | https://www.mdpi.com/1996-1073/10/6/771 |
| article html file updated | 25 September 2019 02:47 CEST | Update | - |
| article html file updated | 3 May 2019 19:31 CEST | Update | - |
| article html file updated | 27 June 2017 10:12 CEST | Update | - |
| article html file updated | 5 June 2017 04:38 CEST | Original file | - |
| article xml uploaded. | 5 June 2017 04:36 CEST | Original file | https://www.mdpi.com/1996-1073/10/6/771/xml |
| article pdf uploaded. | 5 June 2017 04:36 CEST | Updated version of record | https://www.mdpi.com/1996-1073/10/6/771/pdf |
| article pdf uploaded. | 1 June 2017 12:39 CEST | Version of Record | https://www.mdpi.com/1996-1073/10/6/771/pdf-vor |
