| article html file updated | 6 February 2020 15:04 CET | Update | https://www.mdpi.com/2079-6439/3/1/12 |
| article html file updated | 7 May 2019 02:42 CEST | Update | - |
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| article html file updated | 21 August 2015 05:32 CEST | Update | - |
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| article xml file uploaded | 20 January 2015 08:37 CET | Original file | https://www.mdpi.com/2079-6439/3/1/12/xml |
| article pdf uploaded. | 9 January 2015 11:43 CET | Version of Record | https://www.mdpi.com/2079-6439/3/1/12/pdf |
