| article html file updated | 8 February 2020 22:11 CET | Update | https://www.mdpi.com/2075-4701/7/12/521 |
| article html file updated | 28 September 2019 17:55 CEST | Update | - |
| article html file updated | 2 May 2019 12:48 CEST | Update | - |
| article html file updated | 18 April 2019 10:25 CEST | Update | - |
| article html file updated | 2 January 2018 17:21 CET | Update | - |
| article html file updated | 27 November 2017 08:10 CET | Update | - |
| article xml uploaded. | 27 November 2017 08:09 CET | Update | https://www.mdpi.com/2075-4701/7/12/521/xml |
| article xml uploaded. | 27 November 2017 08:09 CET | Update | - |
| article pdf uploaded. | 27 November 2017 08:09 CET | Updated version of record | https://www.mdpi.com/2075-4701/7/12/521/pdf |
| article html file updated | 24 November 2017 12:45 CET | Original file | - |
| article xml uploaded. | 24 November 2017 12:43 CET | Original file | - |
| article pdf uploaded. | 24 November 2017 12:43 CET | Version of Record | https://www.mdpi.com/2075-4701/7/12/521/pdf-vor |
