| article html file updated | 7 February 2020 17:25 CET | Update | https://www.mdpi.com/2075-4450/7/4/61 |
| article html file updated | 22 September 2019 04:36 CEST | Update | - |
| article html file updated | 4 May 2019 23:39 CEST | Update | - |
| article html file updated | 29 December 2016 04:32 CET | Update | - |
| article html file updated | 3 November 2016 04:45 CET | Original file | - |
| article xml uploaded. | 3 November 2016 04:43 CET | Update | https://www.mdpi.com/2075-4450/7/4/61/xml |
| article xml uploaded. | 3 November 2016 04:43 CET | Original file | - |
| article pdf uploaded. | 3 November 2016 04:43 CET | Version of Record | https://www.mdpi.com/2075-4450/7/4/61/pdf |
