| article html file updated | 8 February 2020 09:30 CET | Update | https://www.mdpi.com/1999-4907/8/7/227 |
| article html file updated | 25 September 2019 14:52 CEST | Update | N/A |
| article html file updated | 3 May 2019 15:10 CEST | Update | N/A |
| article html file updated | 1 August 2017 08:42 CEST | Update | N/A |
| article html file updated | 28 June 2017 15:03 CEST | Original file | N/A |
| article xml uploaded. | 28 June 2017 13:22 CEST | Original file | https://www.mdpi.com/1999-4907/8/7/227/xml |
| article pdf uploaded. | 28 June 2017 13:22 CEST | Version of Record | https://www.mdpi.com/1999-4907/8/7/227/pdf |
