| article html file updated | 6 February 2020 02:59 CET | Update | https://www.mdpi.com/2079-6382/2/3/339 |
| article html file updated | 19 September 2019 22:24 CEST | Update | - |
| article html file updated | 8 May 2019 03:18 CEST | Update | - |
| article html file updated | 21 March 2019 00:42 CET | Update | - |
| article html file updated | 17 June 2015 10:52 CEST | Original file | - |
| article pdf uploaded. | 4 July 2013 12:12 CEST | Version of Record | https://www.mdpi.com/2079-6382/2/3/339/pdf |
