| article html file updated | 7 February 2020 21:05 CET | Update | https://www.mdpi.com/2075-4701/7/1/18 |
| article html file updated | 22 September 2019 19:33 CEST | Update | N/A |
| article html file updated | 4 May 2019 16:09 CEST | Update | N/A |
| article html file updated | 7 February 2017 09:34 CET | Update | N/A |
| article html file updated | 10 January 2017 15:47 CET | Original file | N/A |
| article xml uploaded. | 10 January 2017 15:45 CET | Original file | https://www.mdpi.com/2075-4701/7/1/18/xml |
| article pdf uploaded. | 10 January 2017 15:45 CET | Version of Record | https://www.mdpi.com/2075-4701/7/1/18/pdf |
