| article html file updated | 6 February 2020 13:54 CET | Update | https://www.mdpi.com/1422-0067/15/12/21687 |
| article html file updated | 20 September 2019 15:14 CEST | Update | - |
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| article html file updated | 21 August 2015 02:39 CEST | Update | - |
| article html file updated | 6 January 2015 09:15 CET | Original file | - |
| article xml file uploaded | 6 January 2015 09:15 CET | Original file | https://www.mdpi.com/1422-0067/15/12/21687/xml |
| article pdf uploaded. | 25 November 2014 13:53 CET | Version of Record | https://www.mdpi.com/1422-0067/15/12/21687/pdf |
