| article html file updated | 6 February 2020 05:14 CET | Update | https://www.mdpi.com/2075-4698/3/4/399 |
| article html file updated | 7 May 2019 22:42 CEST | Update | - |
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| article html file updated | 17 June 2015 14:22 CEST | Update | - |
| article html file updated | 14 November 2014 11:01 CET | Original file | - |
| article xml file uploaded | 14 November 2014 11:01 CET | Original file | https://www.mdpi.com/2075-4698/3/4/399/xml |
| article pdf uploaded. | 29 October 2013 15:56 CET | Version of Record | https://www.mdpi.com/2075-4698/3/4/399/pdf |
