| article html file updated | 8 February 2020 03:00 CET | Update | https://www.mdpi.com/1999-4907/8/4/110 |
| article html file updated | 24 September 2019 04:32 CEST | Update | - |
| article html file updated | 4 May 2019 03:22 CEST | Update | - |
| article html file updated | 28 April 2017 06:41 CEST | Update | - |
| article html file updated | 7 April 2017 04:13 CEST | Original file | - |
| article xml uploaded. | 7 April 2017 04:12 CEST | Original file | https://www.mdpi.com/1999-4907/8/4/110/xml |
| article pdf uploaded. | 7 April 2017 04:12 CEST | Updated version of record | https://www.mdpi.com/1999-4907/8/4/110/pdf |
| article pdf uploaded. | 6 April 2017 14:44 CEST | Version of Record | https://www.mdpi.com/1999-4907/8/4/110/pdf-vor |
