| article html file updated | 7 February 2020 21:00 CET | Update | https://www.mdpi.com/2076-3417/7/1/61 |
| article html file updated | 22 September 2019 19:10 CEST | Update | - |
| article html file updated | 4 May 2019 16:19 CEST | Update | - |
| article html file updated | 8 February 2017 09:31 CET | Update | - |
| article html file updated | 7 January 2017 12:16 CET | Original file | - |
| article xml uploaded. | 7 January 2017 12:14 CET | Original file | https://www.mdpi.com/2076-3417/7/1/61/xml |
| article pdf uploaded. | 7 January 2017 12:14 CET | Version of Record | https://www.mdpi.com/2076-3417/7/1/61/pdf |
