| article html file updated | 7 February 2020 12:52 CET | Update | https://www.mdpi.com/1999-4907/7/8/172 |
| article html file updated | 5 May 2019 07:56 CEST | Update | N/A |
| article html file updated | 27 March 2019 12:43 CET | Update | N/A |
| article html file updated | 25 August 2016 12:06 CEST | Update | N/A |
| article html file updated | 5 August 2016 09:11 CEST | Original file | N/A |
| article xml uploaded. | 5 August 2016 09:10 CEST | Update | https://www.mdpi.com/1999-4907/7/8/172/xml |
| article pdf uploaded. | 5 August 2016 09:10 CEST | Version of Record | https://www.mdpi.com/1999-4907/7/8/172/pdf |
