| article html file updated | 8 February 2020 21:01 CET | Update | https://www.mdpi.com/2075-4701/7/11/503 |
| article html file updated | 2 May 2019 15:23 CEST | Update | N/A |
| article html file updated | 30 November 2017 10:23 CET | Update | N/A |
| article html file updated | 14 November 2017 11:00 CET | Original file | N/A |
| article xml uploaded. | 14 November 2017 10:59 CET | Original file | https://www.mdpi.com/2075-4701/7/11/503/xml |
| article pdf uploaded. | 14 November 2017 10:59 CET | Updated version of record | https://www.mdpi.com/2075-4701/7/11/503/pdf |
| article pdf uploaded. | 13 November 2017 11:36 CET | Version of Record | https://www.mdpi.com/2075-4701/7/11/503/pdf-vor |
