| article html file updated | 6 February 2020 00:18 CET | Update | https://www.mdpi.com/2075-163X/3/1/49 |
| article html file updated | 8 May 2019 09:06 CEST | Update | - |
| article html file updated | 20 March 2019 17:57 CET | Update | - |
| article html file updated | 17 June 2015 05:58 CEST | Original file | - |
| article pdf uploaded. | 30 January 2013 14:20 CET | Updated version of record | https://www.mdpi.com/2075-163X/3/1/49/pdf |
| article pdf uploaded. | 30 January 2013 12:27 CET | Updated version of record | - |
| article pdf uploaded. | 30 January 2013 11:31 CET | Version of Record | - |
