| article html file updated | 7 February 2020 21:17 CET | Update | https://www.mdpi.com/2075-4701/7/1/23 |
| article html file updated | 22 September 2019 20:24 CEST | Update | N/A |
| article html file updated | 4 May 2019 15:43 CEST | Update | N/A |
| article html file updated | 7 February 2017 09:36 CET | Update | N/A |
| article html file updated | 12 January 2017 06:38 CET | Original file | N/A |
| article xml uploaded. | 12 January 2017 06:37 CET | Original file | https://www.mdpi.com/2075-4701/7/1/23/xml |
| article pdf uploaded. | 12 January 2017 06:37 CET | Version of Record | https://www.mdpi.com/2075-4701/7/1/23/pdf |
