| article html file updated | 7 February 2020 18:20 CET | Update | https://www.mdpi.com/2075-4450/7/4/66 |
| article html file updated | 22 September 2019 06:17 CEST | Update | N/A |
| article html file updated | 4 May 2019 21:53 CEST | Update | N/A |
| article html file updated | 29 December 2016 04:33 CET | Update | N/A |
| article html file updated | 22 November 2016 04:04 CET | Original file | N/A |
| article xml uploaded. | 22 November 2016 04:03 CET | Original file | https://www.mdpi.com/2075-4450/7/4/66/xml |
| article pdf uploaded. | 22 November 2016 04:03 CET | Version of Record | https://www.mdpi.com/2075-4450/7/4/66/pdf |
