| article html file updated | 7 February 2020 04:22 CET | Update | https://www.mdpi.com/2079-8954/4/1/12 |
| article html file updated | 21 September 2019 11:03 CEST | Update | - |
| article html file updated | 6 May 2019 00:47 CEST | Update | - |
| article html file updated | 26 March 2019 20:19 CET | Update | - |
| article html file updated | 29 March 2016 11:12 CEST | Original file | - |
| article pdf uploaded. | 6 February 2016 03:08 CET | Version of Record | https://www.mdpi.com/2079-8954/4/1/12/pdf |
| article xml uploaded. | 6 February 2016 03:08 CET | Original file | https://www.mdpi.com/2079-8954/4/1/12/xml |
