| article html file updated | 8 February 2020 03:59 CET | Update | https://www.mdpi.com/2075-5309/7/2/34 |
| article html file updated | 24 September 2019 10:10 CEST | Update | - |
| article html file updated | 4 May 2019 01:27 CEST | Update | - |
| article html file updated | 28 June 2017 12:46 CEST | Update | - |
| article html file updated | 21 April 2017 12:40 CEST | Original file | - |
| article xml uploaded. | 21 April 2017 12:38 CEST | Original file | https://www.mdpi.com/2075-5309/7/2/34/xml |
| article pdf uploaded. | 21 April 2017 12:38 CEST | Updated version of record | https://www.mdpi.com/2075-5309/7/2/34/pdf |
| article pdf uploaded. | 20 April 2017 14:38 CEST | Version of Record | https://www.mdpi.com/2075-5309/7/2/34/pdf-vor |
