| article xml uploaded. | 25 May 2021 08:29 CEST | Update | https://www.mdpi.com/2073-4409/2/3/506/xml |
| article html file updated | 17 June 2015 10:48 CEST | Update | https://www.mdpi.com/2073-4409/2/3/506 |
| article html file updated | 28 April 2014 10:43 CEST | Update | N/A |
| article xml file uploaded | 28 April 2014 10:42 CEST | Update | N/A |
| article html file updated | 3 March 2014 09:15 CET | Original file | N/A |
| article xml file uploaded | 3 March 2014 09:14 CET | Original file | N/A |
| article supplementary file uploaded. | 2 July 2013 12:12 CEST | - | https://www.mdpi.com/2073-4409/2/3/506#supplementary |
| article pdf uploaded. | 2 July 2013 12:12 CEST | Version of Record | https://www.mdpi.com/2073-4409/2/3/506/pdf |
