| article html file updated | 7 February 2020 09:36 CET | Update | https://www.mdpi.com/2220-9964/5/6/79 |
| article html file updated | 5 May 2019 14:00 CEST | Update | - |
| article html file updated | 27 March 2019 06:23 CET | Update | - |
| article html file updated | 29 June 2016 05:43 CEST | Update | - |
| article html file updated | 1 June 2016 11:57 CEST | Original file | - |
| article xml uploaded. | 1 June 2016 11:56 CEST | Original file | https://www.mdpi.com/2220-9964/5/6/79/xml |
| article pdf uploaded. | 1 June 2016 11:56 CEST | Version of Record | https://www.mdpi.com/2220-9964/5/6/79/pdf |
