| article html file updated | 8 February 2020 07:25 CET | Update | https://www.mdpi.com/1999-4907/8/6/195 |
| article html file updated | 25 September 2019 03:56 CEST | Update | - |
| article html file updated | 3 May 2019 19:04 CEST | Update | - |
| article html file updated | 27 June 2017 11:18 CEST | Update | - |
| article html file updated | 3 June 2017 13:08 CEST | Original file | - |
| article xml uploaded. | 3 June 2017 13:07 CEST | Original file | https://www.mdpi.com/1999-4907/8/6/195/xml |
| article pdf uploaded. | 3 June 2017 13:07 CEST | Version of Record | https://www.mdpi.com/1999-4907/8/6/195/pdf |
