| article html file updated | 6 February 2020 00:45 CET | Update | https://www.mdpi.com/1660-3397/11/3/623 |
| article html file updated | 8 May 2019 07:54 CEST | Update | - |
| article html file updated | 20 March 2019 19:09 CET | Update | - |
| article html file updated | 17 June 2015 06:57 CEST | Original file | - |
| article pdf uploaded. | 1 March 2013 11:58 CET | Version of Record | https://www.mdpi.com/1660-3397/11/3/623/pdf |
