| article html file updated | 7 February 2020 02:44 CET | Update | https://www.mdpi.com/1660-3397/14/1/3 |
| article html file updated | 6 May 2019 03:53 CEST | Update | N/A |
| article html file updated | 26 March 2019 17:18 CET | Original file | N/A |
| article pdf uploaded. | 25 December 2015 11:46 CET | Version of Record | https://www.mdpi.com/1660-3397/14/1/3/pdf |
| article xml uploaded. | 25 December 2015 11:46 CET | Original file | https://www.mdpi.com/1660-3397/14/1/3/xml |
