| article html file updated | 7 February 2020 19:34 CET | Update | https://www.mdpi.com/2076-328X/6/4/29 |
| article html file updated | 22 September 2019 11:13 CEST | Update | - |
| article html file updated | 4 May 2019 19:21 CEST | Update | - |
| article html file updated | 29 December 2016 06:09 CET | Update | - |
| article html file updated | 14 December 2016 02:54 CET | Original file | - |
| article xml uploaded. | 14 December 2016 02:53 CET | Original file | https://www.mdpi.com/2076-328X/6/4/29/xml |
| article pdf uploaded. | 14 December 2016 02:53 CET | Version of Record | https://www.mdpi.com/2076-328X/6/4/29/pdf |
