| article html file updated | 8 February 2020 03:20 CET | Update | https://www.mdpi.com/1999-4915/9/4/77 |
| article html file updated | 24 September 2019 06:24 CEST | Update | - |
| article html file updated | 4 May 2019 02:41 CEST | Update | - |
| article html file updated | 29 April 2017 05:53 CEST | Update | - |
| article html file updated | 12 April 2017 14:11 CEST | Original file | - |
| article xml uploaded. | 12 April 2017 14:10 CEST | Original file | https://www.mdpi.com/1999-4915/9/4/77/xml |
| article pdf uploaded. | 12 April 2017 14:10 CEST | Updated version of record | https://www.mdpi.com/1999-4915/9/4/77/pdf |
| article pdf uploaded. | 11 April 2017 11:40 CEST | Version of Record | https://www.mdpi.com/1999-4915/9/4/77/pdf-vor |
