| article html file updated | 6 February 2020 00:08 CET | Update | https://www.mdpi.com/2071-1050/5/1/298 |
| article html file updated | 8 May 2019 09:30 CEST | Update | - |
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| article html file updated | 17 June 2015 05:40 CEST | Update | - |
| article html file updated | 15 February 2013 10:41 CET | Update | - |
| article xml uploaded. | 15 February 2013 10:41 CET | Update | https://www.mdpi.com/2071-1050/5/1/298/xml |
| article html file updated | 8 February 2013 09:35 CET | Update | - |
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| article pdf uploaded. | 24 January 2013 08:19 CET | Updated version of record | https://www.mdpi.com/2071-1050/5/1/298/pdf |
| article html file updated | 23 January 2013 14:20 CET | Original file | - |
| article xml uploaded. | 23 January 2013 14:20 CET | Original file | - |
| article pdf uploaded. | 23 January 2013 08:53 CET | Updated version of record | https://www.mdpi.com/2071-1050/5/1/298/pdf-vor |
| article pdf uploaded. | 21 January 2013 13:43 CET | Version of Record | https://www.mdpi.com/2071-1050/5/1/298/pdf-vor |
