| article html file updated | 7 February 2020 20:07 CET | Update | https://www.mdpi.com/2076-3417/7/1/2 |
| article html file updated | 22 September 2019 14:12 CEST | Update | - |
| article html file updated | 4 May 2019 18:11 CEST | Update | - |
| article html file updated | 8 February 2017 08:37 CET | Update | - |
| article html file updated | 22 December 2016 12:12 CET | Original file | - |
| article xml uploaded. | 22 December 2016 12:11 CET | Update | https://www.mdpi.com/2076-3417/7/1/2/xml |
| article pdf uploaded. | 22 December 2016 12:11 CET | Updated version of record | https://www.mdpi.com/2076-3417/7/1/2/pdf |
| article xml uploaded. | 22 December 2016 12:06 CET | Update | - |
| article xml uploaded. | 22 December 2016 12:06 CET | Original file | - |
| article pdf uploaded. | 22 December 2016 12:06 CET | Version of Record | - |
