| article html file updated | 7 February 2020 01:29 CET | Update | https://new.mdpi.com/2077-0472/5/4/1172 |
| article html file updated | 21 September 2019 06:49 CEST | Update | - |
| article html file updated | 6 May 2019 06:30 CEST | Update | - |
| article html file updated | 26 March 2019 15:15 CET | Original file | - |
| article pdf uploaded. | 27 November 2015 13:35 CET | Version of Record | https://new.mdpi.com/2077-0472/5/4/1172/pdf |
| article xml uploaded. | 27 November 2015 13:35 CET | Original file | https://new.mdpi.com/2077-0472/5/4/1172/xml |
