| article html file updated | 8 February 2020 03:22 CET | Update | https://www.mdpi.com/2075-4450/8/2/42 |
| article html file updated | 24 September 2019 06:32 CEST | Update | - |
| article html file updated | 4 May 2019 02:38 CEST | Update | - |
| article html file updated | 30 June 2017 05:43 CEST | Update | - |
| article html file updated | 14 April 2017 13:08 CEST | Original file | - |
| article xml uploaded. | 14 April 2017 13:07 CEST | Original file | https://www.mdpi.com/2075-4450/8/2/42/xml |
| article pdf uploaded. | 14 April 2017 13:07 CEST | Updated version of record | https://www.mdpi.com/2075-4450/8/2/42/pdf |
| article pdf uploaded. | 11 April 2017 15:10 CEST | Version of Record | https://www.mdpi.com/2075-4450/8/2/42/pdf-vor |
