| article html file updated | 7 February 2020 09:58 CET | Update | https://www.mdpi.com/2075-4442/4/2/20 |
| article html file updated | 5 May 2019 13:19 CEST | Update | - |
| article html file updated | 27 March 2019 07:08 CET | Update | - |
| article html file updated | 9 June 2016 09:23 CEST | Original file | - |
| article xml uploaded. | 9 June 2016 09:21 CEST | Original file | https://www.mdpi.com/2075-4442/4/2/20/xml |
| article pdf uploaded. | 9 June 2016 09:21 CEST | Version of Record | https://www.mdpi.com/2075-4442/4/2/20/pdf |
