| article html file updated | 8 February 2020 14:55 CET | Update | https://www.mdpi.com/2079-9268/7/3/21 |
| article html file updated | 26 September 2019 20:39 CEST | Update | N/A |
| article html file updated | 3 May 2019 04:19 CEST | Update | N/A |
| article html file updated | 30 August 2017 14:35 CEST | Original file | N/A |
| article xml uploaded. | 30 August 2017 14:33 CEST | Update | https://www.mdpi.com/2079-9268/7/3/21/xml |
| article xml uploaded. | 30 August 2017 14:33 CEST | Original file | N/A |
| article pdf uploaded. | 30 August 2017 14:33 CEST | Version of Record | https://www.mdpi.com/2079-9268/7/3/21/pdf |
