| article html file updated | 7 February 2020 23:05 CET | Update | https://www.mdpi.com/2072-6651/9/2/61 |
| article html file updated | 23 September 2019 06:15 CEST | Update | - |
| article html file updated | 4 May 2019 11:51 CEST | Update | - |
| article html file updated | 1 March 2017 03:44 CET | Update | - |
| article html file updated | 20 February 2017 03:53 CET | Update | - |
| article xml uploaded. | 20 February 2017 03:52 CET | Update | https://www.mdpi.com/2072-6651/9/2/61/xml |
| article pdf uploaded. | 20 February 2017 03:52 CET | Updated version of record | https://www.mdpi.com/2072-6651/9/2/61/pdf |
| article html file updated | 10 February 2017 14:06 CET | Original file | - |
| article xml uploaded. | 10 February 2017 14:05 CET | Original file | - |
| article pdf uploaded. | 10 February 2017 14:05 CET | Version of Record | https://www.mdpi.com/2072-6651/9/2/61/pdf-vor |
