| article html file updated | 6 February 2020 10:05 CET | Update | https://www.mdpi.com/2218-273X/4/2/566 |
| article html file updated | 20 September 2019 09:28 CEST | Update | - |
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| article html file updated | 14 March 2018 13:27 CET | Update | - |
| article html file updated | 20 August 2015 10:26 CEST | Update | - |
| article html file updated | 18 July 2014 03:56 CEST | Original file | - |
| article xml file uploaded | 18 July 2014 03:56 CEST | Original file | https://www.mdpi.com/2218-273X/4/2/566/xml |
| article pdf uploaded. | 19 June 2014 13:05 CEST | Version of Record | https://www.mdpi.com/2218-273X/4/2/566/pdf |
