| article html file updated | 6 February 2020 01:17 CET | Update | https://www.mdpi.com/1660-4601/10/4/1304 |
| article html file updated | 8 May 2019 06:47 CEST | Update | N/A |
| article html file updated | 20 March 2019 20:25 CET | Update | N/A |
| article html file updated | 17 June 2015 08:02 CEST | Original file | N/A |
| article pdf uploaded. | 28 March 2013 14:45 CET | Version of Record | https://www.mdpi.com/1660-4601/10/4/1304/pdf |
