| article html file updated | 6 February 2020 00:27 CET | Update | https://www.mdpi.com/2072-6643/5/2/424 |
| article html file updated | 8 May 2019 08:42 CEST | Update | - |
| article html file updated | 20 March 2019 18:21 CET | Update | - |
| article html file updated | 17 June 2015 06:17 CEST | Update | - |
| article html file updated | 8 February 2013 09:53 CET | Update | - |
| article html file updated | 7 February 2013 15:55 CET | Original file | - |
| article xml uploaded. | 7 February 2013 15:54 CET | Original file | https://www.mdpi.com/2072-6643/5/2/424/xml |
| article pdf uploaded. | 7 February 2013 15:54 CET | Updated version of record | https://www.mdpi.com/2072-6643/5/2/424/pdf |
| article pdf uploaded. | 6 February 2013 12:59 CET | Version of Record | https://www.mdpi.com/2072-6643/5/2/424/pdf-vor |
