| article html file updated | 6 February 2020 00:13 CET | Update | https://www.mdpi.com/2075-4701/3/1/69 |
| article html file updated | 8 May 2019 09:19 CEST | Update | - |
| article html file updated | 20 March 2019 17:44 CET | Update | - |
| article html file updated | 17 June 2015 05:48 CEST | Update | - |
| article html file updated | 19 February 2013 11:57 CET | Update | - |
| article xml uploaded. | 19 February 2013 11:57 CET | Update | https://www.mdpi.com/2075-4701/3/1/69/xml |
| article html file updated | 8 February 2013 09:39 CET | Update | - |
| article html file updated | 7 February 2013 17:59 CET | Update | - |
| article html file updated | 28 January 2013 15:52 CET | Original file | - |
| article xml uploaded. | 28 January 2013 15:52 CET | Original file | - |
| article pdf uploaded. | 25 January 2013 15:55 CET | Updated version of record | https://www.mdpi.com/2075-4701/3/1/69/pdf |
| article pdf uploaded. | 25 January 2013 08:50 CET | Version of Record | https://www.mdpi.com/2075-4701/3/1/69/pdf-vor |
