| article html file updated | 7 February 2020 04:37 CET | Update | https://www.mdpi.com/2075-5309/6/1/8 |
| article html file updated | 6 May 2019 00:12 CEST | Update | - |
| article html file updated | 26 March 2019 20:51 CET | Update | - |
| article html file updated | 16 June 2016 05:56 CEST | Original file | - |
| article pdf uploaded. | 17 February 2016 03:25 CET | Version of Record | https://www.mdpi.com/2075-5309/6/1/8/pdf |
| article xml uploaded. | 17 February 2016 03:25 CET | Original file | https://www.mdpi.com/2075-5309/6/1/8/xml |
