| article html file updated | 7 February 2020 14:43 CET | Update | https://www.mdpi.com/2076-3417/6/9/252 |
| article html file updated | 5 May 2019 04:35 CEST | Update | - |
| article html file updated | 27 September 2016 08:07 CEST | Update | - |
| article html file updated | 9 September 2016 09:49 CEST | Original file | - |
| article xml uploaded. | 9 September 2016 09:47 CEST | Update | https://www.mdpi.com/2076-3417/6/9/252/xml |
| article xml uploaded. | 9 September 2016 09:47 CEST | Original file | - |
| article pdf uploaded. | 9 September 2016 09:47 CEST | Version of Record | https://www.mdpi.com/2076-3417/6/9/252/pdf |
