| article html file updated | 9 February 2020 03:44 CET | Update | https://www.mdpi.com/1911-8074/11/1/6 |
| article html file updated | 30 September 2019 02:06 CEST | Update | - |
| article html file updated | 2 May 2019 00:51 CEST | Update | - |
| article html file updated | 17 April 2019 23:15 CEST | Update | - |
| article html file updated | 28 March 2019 17:03 CET | Update | - |
| article html file updated | 27 March 2018 12:22 CEST | Update | - |
| article html file updated | 19 January 2018 18:34 CET | Original file | - |
| article xml uploaded. | 19 January 2018 18:33 CET | Update | https://www.mdpi.com/1911-8074/11/1/6/xml |
| article xml uploaded. | 19 January 2018 18:33 CET | Original file | - |
| article pdf uploaded. | 19 January 2018 18:33 CET | Version of Record | https://www.mdpi.com/1911-8074/11/1/6/pdf |
