| article html file updated | 8 February 2020 07:09 CET | Update | https://www.mdpi.com/1999-4907/8/6/190 |
| article html file updated | 25 September 2019 02:35 CEST | Update | N/A |
| article html file updated | 3 May 2019 19:36 CEST | Update | N/A |
| article html file updated | 27 June 2017 11:17 CEST | Update | N/A |
| article html file updated | 23 June 2017 05:11 CEST | Original file | N/A |
| article xml uploaded. | 23 June 2017 05:10 CEST | Update | https://www.mdpi.com/1999-4907/8/6/190/xml |
| article pdf uploaded. | 31 May 2017 15:26 CEST | Version of Record | https://www.mdpi.com/1999-4907/8/6/190/pdf |
