| article html file updated | 8 February 2020 07:19 CET | Update | https://www.mdpi.com/1999-4915/9/6/136 |
| article html file updated | 25 September 2019 03:22 CEST | Update | - |
| article html file updated | 3 May 2019 19:17 CEST | Update | - |
| article html file updated | 29 June 2017 12:04 CEST | Update | - |
| article html file updated | 6 June 2017 02:54 CEST | Original file | - |
| article xml uploaded. | 6 June 2017 02:53 CEST | Original file | https://www.mdpi.com/1999-4915/9/6/136/xml |
| article pdf uploaded. | 6 June 2017 02:53 CEST | Updated version of record | https://www.mdpi.com/1999-4915/9/6/136/pdf |
| article pdf uploaded. | 2 June 2017 15:01 CEST | Version of Record | https://www.mdpi.com/1999-4915/9/6/136/pdf-vor |
