| article html file updated | 7 February 2020 14:00 CET | Update | https://www.mdpi.com/1999-4907/7/9/188 |
| article html file updated | 5 May 2019 05:54 CEST | Update | N/A |
| article html file updated | 27 March 2019 15:02 CET | Update | N/A |
| article html file updated | 28 September 2016 07:16 CEST | Update | N/A |
| article html file updated | 27 August 2016 09:53 CEST | Original file | N/A |
| article xml uploaded. | 27 August 2016 09:51 CEST | Update | https://www.mdpi.com/1999-4907/7/9/188/xml |
| article xml uploaded. | 27 August 2016 09:51 CEST | Original file | N/A |
| article pdf uploaded. | 27 August 2016 09:51 CEST | Version of Record | https://www.mdpi.com/1999-4907/7/9/188/pdf |
