| article html file updated | 7 February 2020 22:52 CET | Update | https://www.mdpi.com/2079-6412/7/2/23 |
| article html file updated | 23 September 2019 05:04 CEST | Update | - |
| article html file updated | 4 May 2019 12:18 CEST | Update | - |
| article html file updated | 2 March 2017 03:34 CET | Update | - |
| article html file updated | 8 February 2017 14:55 CET | Original file | - |
| article xml uploaded. | 8 February 2017 14:53 CET | Original file | https://www.mdpi.com/2079-6412/7/2/23/xml |
| article pdf uploaded. | 8 February 2017 14:53 CET | Version of Record | https://www.mdpi.com/2079-6412/7/2/23/pdf |
