| article html file updated | 7 February 2020 03:13 CET | Update | https://www.mdpi.com/2075-5309/6/1/3 |
| article html file updated | 6 May 2019 02:59 CEST | Update | - |
| article html file updated | 26 March 2019 18:02 CET | Update | - |
| article html file updated | 16 June 2016 05:54 CEST | Original file | - |
| article pdf uploaded. | 8 January 2016 14:57 CET | Version of Record | https://www.mdpi.com/2075-5309/6/1/3/pdf |
| article xml uploaded. | 8 January 2016 14:57 CET | Original file | https://www.mdpi.com/2075-5309/6/1/3/xml |
