| article html file updated | 7 February 2020 02:24 CET | Update | https://www.mdpi.com/2079-6412/5/4/1002 |
| article html file updated | 6 May 2019 04:37 CEST | Update | - |
| article html file updated | 26 March 2019 16:46 CET | Update | - |
| article html file updated | 19 May 2016 12:06 CEST | Update | - |
| article html file updated | 19 May 2016 11:54 CEST | Original file | - |
| article pdf uploaded. | 18 December 2015 13:31 CET | Version of Record | https://www.mdpi.com/2079-6412/5/4/1002/pdf |
| article xml uploaded. | 18 December 2015 13:31 CET | Original file | https://www.mdpi.com/2079-6412/5/4/1002/xml |
