| article html file updated | 8 February 2020 14:31 CET | Update | https://www.mdpi.com/1999-4907/8/9/311 |
| article html file updated | 26 September 2019 18:20 CEST | Update | N/A |
| article html file updated | 3 May 2019 05:04 CEST | Update | N/A |
| article html file updated | 30 September 2017 10:26 CEST | Update | N/A |
| article html file updated | 25 August 2017 14:02 CEST | Original file | N/A |
| article xml uploaded. | 25 August 2017 14:01 CEST | Update | https://www.mdpi.com/1999-4907/8/9/311/xml |
| article xml uploaded. | 25 August 2017 14:01 CEST | Original file | N/A |
| article pdf uploaded. | 25 August 2017 14:01 CEST | Version of Record | https://www.mdpi.com/1999-4907/8/9/311/pdf |
