| article html file updated | 8 February 2020 19:35 CET | Update | https://www.mdpi.com/2075-4442/5/4/42 |
| article html file updated | 28 September 2019 01:08 CEST | Update | - |
| article html file updated | 2 May 2019 18:40 CEST | Update | - |
| article html file updated | 2 January 2018 14:34 CET | Update | - |
| article html file updated | 27 October 2017 11:36 CEST | Original file | - |
| article xml uploaded. | 27 October 2017 11:35 CEST | Original file | https://www.mdpi.com/2075-4442/5/4/42/xml |
| article pdf uploaded. | 27 October 2017 11:35 CEST | Version of Record | https://www.mdpi.com/2075-4442/5/4/42/pdf |
