| article html file updated | 9 February 2020 02:07 CET | Update | https://www.mdpi.com/2076-0752/7/1/2 |
| article html file updated | 2 May 2019 04:12 CEST | Update | - |
| article html file updated | 18 April 2019 02:17 CEST | Update | - |
| article html file updated | 28 March 2019 13:22 CET | Update | - |
| article html file updated | 26 March 2018 15:51 CEST | Update | - |
| article html file updated | 5 January 2018 12:54 CET | Original file | - |
| article xml uploaded. | 5 January 2018 12:52 CET | Update | https://www.mdpi.com/2076-0752/7/1/2/xml |
| article pdf uploaded. | 5 January 2018 12:52 CET | Version of Record | https://www.mdpi.com/2076-0752/7/1/2/pdf |
