| article html file updated | 7 February 2020 05:50 CET | Update | https://www.mdpi.com/2075-4442/4/1/7 |
| article html file updated | 5 May 2019 21:36 CEST | Update | N/A |
| article html file updated | 26 March 2019 23:21 CET | Original file | N/A |
| article pdf uploaded. | 14 March 2016 08:04 CET | Version of Record | https://www.mdpi.com/2075-4442/4/1/7/pdf |
| article xml uploaded. | 14 March 2016 08:04 CET | Original file | https://www.mdpi.com/2075-4442/4/1/7/xml |
