| article html file updated | 6 February 2020 01:54 CET | Update | https://www.mdpi.com/2304-6767/1/2/12 |
| article html file updated | 19 September 2019 20:20 CEST | Update | - |
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| article xml file uploaded | 14 August 2014 11:41 CEST | Update | https://www.mdpi.com/2304-6767/1/2/12/xml |
| article html file updated | 14 August 2014 11:21 CEST | Original file | - |
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| article pdf uploaded. | 6 May 2013 10:40 CEST | Version of Record | https://www.mdpi.com/2304-6767/1/2/12/pdf |