| article html file updated | 8 February 2020 07:45 CET | Update | https://www.mdpi.com/2077-1444/8/6/109 |
| article html file updated | 3 May 2019 18:27 CEST | Update | N/A |
| article html file updated | 28 June 2017 14:27 CEST | Update | N/A |
| article html file updated | 9 June 2017 03:26 CEST | Original file | N/A |
| article xml uploaded. | 9 June 2017 03:25 CEST | Original file | https://www.mdpi.com/2077-1444/8/6/109/xml |
| article pdf uploaded. | 9 June 2017 03:25 CEST | Updated version of record | https://www.mdpi.com/2077-1444/8/6/109/pdf |
| article pdf uploaded. | 8 June 2017 11:05 CEST | Version of Record | https://www.mdpi.com/2077-1444/8/6/109/pdf-vor |
