| article html file updated | 8 February 2020 06:56 CET | Update | https://www.mdpi.com/1999-4907/8/6/186 |
| article html file updated | 25 September 2019 01:35 CEST | Update | - |
| article html file updated | 3 May 2019 19:58 CEST | Update | - |
| article html file updated | 27 June 2017 11:16 CEST | Update | - |
| article html file updated | 1 June 2017 10:01 CEST | Original file | - |
| article xml uploaded. | 1 June 2017 09:59 CEST | Original file | https://www.mdpi.com/1999-4907/8/6/186/xml |
| article pdf uploaded. | 1 June 2017 09:59 CEST | Updated version of record | https://www.mdpi.com/1999-4907/8/6/186/pdf |
| article pdf uploaded. | 28 May 2017 11:51 CEST | Version of Record | https://www.mdpi.com/1999-4907/8/6/186/pdf-vor |
