| article html file updated | 8 February 2020 16:14 CET | Update | https://www.mdpi.com/1999-4907/8/9/344 |
| article html file updated | 27 September 2019 03:43 CEST | Update | - |
| article html file updated | 3 May 2019 01:55 CEST | Update | - |
| article html file updated | 30 September 2017 10:22 CEST | Update | - |
| article html file updated | 14 September 2017 14:29 CEST | Original file | - |
| article xml uploaded. | 14 September 2017 14:28 CEST | Original file | https://www.mdpi.com/1999-4907/8/9/344/xml |
| article pdf uploaded. | 14 September 2017 14:28 CEST | Version of Record | https://www.mdpi.com/1999-4907/8/9/344/pdf |
