| article html file updated | 7 February 2020 23:04 CET | Update | https://www.mdpi.com/2076-3417/7/2/168 |
| article html file updated | 23 September 2019 06:12 CEST | Update | - |
| article html file updated | 4 May 2019 11:52 CEST | Update | - |
| article html file updated | 1 March 2017 04:34 CET | Update | - |
| article html file updated | 10 February 2017 12:58 CET | Original file | - |
| article xml uploaded. | 10 February 2017 12:57 CET | Original file | https://www.mdpi.com/2076-3417/7/2/168/xml |
| article pdf uploaded. | 10 February 2017 12:57 CET | Version of Record | https://www.mdpi.com/2076-3417/7/2/168/pdf |
