| article html file updated | 8 February 2020 06:07 CET | Update | https://www.mdpi.com/2079-9268/7/2/12 |
| article html file updated | 24 September 2019 21:17 CEST | Update | N/A |
| article html file updated | 3 May 2019 21:31 CEST | Update | N/A |
| article html file updated | 22 May 2017 04:32 CEST | Update | N/A |
| article html file updated | 18 May 2017 10:55 CEST | Original file | N/A |
| article xml uploaded. | 18 May 2017 10:54 CEST | Original file | https://www.mdpi.com/2079-9268/7/2/12/xml |
| article pdf uploaded. | 18 May 2017 10:54 CEST | Version of Record | https://www.mdpi.com/2079-9268/7/2/12/pdf |
