| article html file updated | 7 February 2020 09:38 CET | Update | https://www.mdpi.com/2220-9964/5/6/80 |
| article html file updated | 5 May 2019 13:56 CEST | Update | - |
| article html file updated | 27 March 2019 06:27 CET | Update | - |
| article html file updated | 29 June 2016 05:44 CEST | Update | - |
| article html file updated | 2 June 2016 10:19 CEST | Original file | - |
| article xml uploaded. | 2 June 2016 10:17 CEST | Original file | https://www.mdpi.com/2220-9964/5/6/80/xml |
| article pdf uploaded. | 2 June 2016 10:17 CEST | Version of Record | https://www.mdpi.com/2220-9964/5/6/80/pdf |
