| article html file updated | 7 February 2020 09:12 CET | Update | https://www.mdpi.com/2220-9964/5/6/74 |
| article html file updated | 5 May 2019 14:51 CEST | Update | - |
| article html file updated | 27 March 2019 05:36 CET | Update | - |
| article html file updated | 29 June 2016 05:42 CEST | Update | - |
| article html file updated | 24 May 2016 11:32 CEST | Original file | - |
| article xml uploaded. | 24 May 2016 11:30 CEST | Update | https://www.mdpi.com/2220-9964/5/6/74/xml |
| article pdf uploaded. | 24 May 2016 11:30 CEST | Version of Record | https://www.mdpi.com/2220-9964/5/6/74/pdf |
