| article html file updated | 7 February 2020 17:26 CET | Update | https://www.mdpi.com/2076-328X/6/4/23 |
| article html file updated | 22 September 2019 04:36 CEST | Update | N/A |
| article html file updated | 4 May 2019 23:38 CEST | Update | N/A |
| article html file updated | 29 December 2016 06:07 CET | Update | N/A |
| article html file updated | 3 November 2016 05:33 CET | Original file | N/A |
| article xml uploaded. | 3 November 2016 05:32 CET | Original file | https://www.mdpi.com/2076-328X/6/4/23/xml |
| article pdf uploaded. | 3 November 2016 05:32 CET | Version of Record | https://www.mdpi.com/2076-328X/6/4/23/pdf |
