| article html file updated | 7 February 2020 23:05 CET | Update | https://www.mdpi.com/2076-3417/7/2/170 |
| article html file updated | 23 September 2019 06:15 CEST | Update | - |
| article html file updated | 4 May 2019 11:51 CEST | Update | - |
| article html file updated | 1 March 2017 04:35 CET | Update | - |
| article html file updated | 14 February 2017 07:12 CET | Original file | - |
| article xml uploaded. | 14 February 2017 07:11 CET | Original file | https://www.mdpi.com/2076-3417/7/2/170/xml |
| article pdf uploaded. | 14 February 2017 07:11 CET | Updated version of record | https://www.mdpi.com/2076-3417/7/2/170/pdf |
| article pdf uploaded. | 10 February 2017 13:00 CET | Version of Record | https://www.mdpi.com/2076-3417/7/2/170/pdf-vor |
