| article html file updated | 7 February 2020 03:41 CET | Update | https://new.mdpi.com/2071-1050/8/1/103 |
| article html file updated | 6 May 2019 02:05 CEST | Update | - |
| article html file updated | 26 March 2019 18:58 CET | Original file | - |
| article pdf uploaded. | 21 January 2016 09:52 CET | Version of Record | https://new.mdpi.com/2071-1050/8/1/103/pdf |
| article xml uploaded. | 21 January 2016 09:52 CET | Original file | https://new.mdpi.com/2071-1050/8/1/103/xml |
