| article html file updated | 8 February 2020 07:10 CET | Update | https://www.mdpi.com/1999-4915/9/6/133 |
| article html file updated | 25 September 2019 02:42 CEST | Update | - |
| article html file updated | 3 May 2019 19:34 CEST | Update | - |
| article html file updated | 29 June 2017 12:04 CEST | Update | - |
| article html file updated | 2 June 2017 09:01 CEST | Original file | - |
| article xml uploaded. | 2 June 2017 09:00 CEST | Original file | https://www.mdpi.com/1999-4915/9/6/133/xml |
| article pdf uploaded. | 2 June 2017 09:00 CEST | Updated version of record | https://www.mdpi.com/1999-4915/9/6/133/pdf |
| article pdf uploaded. | 1 June 2017 10:10 CEST | Version of Record | https://www.mdpi.com/1999-4915/9/6/133/pdf-vor |
