| article html file updated | 7 February 2020 10:42 CET | Update | https://www.mdpi.com/2075-163X/6/3/60 |
| article html file updated | 5 May 2019 11:57 CEST | Update | - |
| article html file updated | 27 March 2019 08:25 CET | Update | - |
| article html file updated | 28 September 2016 07:33 CEST | Update | - |
| article html file updated | 24 June 2016 10:41 CEST | Original file | - |
| article xml uploaded. | 24 June 2016 10:40 CEST | Original file | https://www.mdpi.com/2075-163X/6/3/60/xml |
| article pdf uploaded. | 24 June 2016 10:40 CEST | Version of Record | https://www.mdpi.com/2075-163X/6/3/60/pdf |
