| article html file updated | 6 February 2020 15:07 CET | Update | https://www.mdpi.com/1996-1073/8/1/387 |
| article html file updated | 7 May 2019 02:35 CEST | Update | - |
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| article html file updated | 21 August 2015 05:39 CEST | Update | - |
| article html file updated | 20 January 2015 08:37 CET | Original file | - |
| article xml file uploaded | 20 January 2015 08:37 CET | Original file | https://www.mdpi.com/1996-1073/8/1/387/xml |
| article pdf uploaded. | 12 January 2015 15:35 CET | Version of Record | https://www.mdpi.com/1996-1073/8/1/387/pdf |
