| article html file updated | 7 February 2020 20:28 CET | Update | https://www.mdpi.com/2076-3417/7/1/39 |
| article html file updated | 22 September 2019 16:06 CEST | Update | - |
| article html file updated | 4 May 2019 17:29 CEST | Update | - |
| article html file updated | 8 February 2017 09:08 CET | Update | - |
| article html file updated | 29 December 2016 04:00 CET | Original file | - |
| article xml uploaded. | 29 December 2016 03:59 CET | Update | https://www.mdpi.com/2076-3417/7/1/39/xml |
| article xml uploaded. | 29 December 2016 03:59 CET | Original file | - |
| article pdf uploaded. | 29 December 2016 03:59 CET | Version of Record | https://www.mdpi.com/2076-3417/7/1/39/pdf |
