| article html file updated | 8 February 2020 22:43 CET | Update | https://www.mdpi.com/2077-1444/8/12/261 |
| article html file updated | 2 May 2019 11:36 CEST | Update | - |
| article html file updated | 18 April 2019 09:13 CEST | Update | - |
| article html file updated | 2 January 2018 15:39 CET | Update | - |
| article html file updated | 30 November 2017 17:28 CET | Original file | - |
| article xml uploaded. | 30 November 2017 16:50 CET | Original file | https://www.mdpi.com/2077-1444/8/12/261/xml |
| article pdf uploaded. | 30 November 2017 16:50 CET | Version of Record | https://www.mdpi.com/2077-1444/8/12/261/pdf |
