| article html file updated | 6 February 2020 21:46 CET | Update | https://www.mdpi.com/2306-7381/2/3/206 |
| article html file updated | 21 September 2019 01:54 CEST | Update | - |
| article html file updated | 6 May 2019 13:30 CEST | Update | - |
| article html file updated | 26 March 2019 08:45 CET | Update | - |
| article html file updated | 21 August 2015 15:37 CEST | Original file | - |
| article pdf uploaded. | 14 August 2015 13:07 CEST | Version of Record | https://www.mdpi.com/2306-7381/2/3/206/pdf |
