| article html file updated | 8 February 2020 07:49 CET | Update | https://www.mdpi.com/2075-4701/7/6/214 |
| article html file updated | 25 September 2019 06:03 CEST | Update | - |
| article html file updated | 3 May 2019 18:19 CEST | Update | - |
| article html file updated | 28 June 2017 14:03 CEST | Update | - |
| article html file updated | 9 June 2017 12:03 CEST | Original file | - |
| article xml uploaded. | 9 June 2017 12:02 CEST | Original file | https://www.mdpi.com/2075-4701/7/6/214/xml |
| article pdf uploaded. | 9 June 2017 12:02 CEST | Updated version of record | https://www.mdpi.com/2075-4701/7/6/214/pdf |
| article pdf uploaded. | 8 June 2017 13:30 CEST | Version of Record | https://www.mdpi.com/2075-4701/7/6/214/pdf-vor |
