| article html file updated | 6 February 2020 00:02 CET | Update | https://www.mdpi.com/2075-1729/3/1/52 |
| article html file updated | 8 May 2019 09:43 CEST | Update | - |
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| article xml file uploaded | 24 July 2014 10:33 CEST | Update | https://www.mdpi.com/2075-1729/3/1/52/xml |
| article html file updated | 8 February 2013 09:32 CET | Update | - |
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| article html file updated | 6 February 2013 16:51 CET | Update | - |
| article xml uploaded. | 6 February 2013 16:51 CET | Original file | - |
| article html file updated | 24 January 2013 12:25 CET | Original file | - |
| article supplementary file uploaded. | 17 January 2013 09:35 CET | - | https://www.mdpi.com/2075-1729/3/1/52#supplementary |
| article pdf uploaded. | 17 January 2013 09:34 CET | Version of Record | https://www.mdpi.com/2075-1729/3/1/52/pdf |
