| article html file updated | 7 February 2020 10:37 CET | Update | https://www.mdpi.com/2075-163X/6/3/57 |
| article html file updated | 5 May 2019 12:06 CEST | Update | - |
| article html file updated | 27 March 2019 08:16 CET | Update | - |
| article html file updated | 28 September 2016 07:32 CEST | Update | - |
| article html file updated | 23 June 2016 09:33 CEST | Original file | - |
| article xml uploaded. | 23 June 2016 09:31 CEST | Original file | https://www.mdpi.com/2075-163X/6/3/57/xml |
| article pdf uploaded. | 23 June 2016 09:31 CEST | Version of Record | https://www.mdpi.com/2075-163X/6/3/57/pdf |
