| article html file updated | 6 February 2020 06:03 CET | Update | https://www.mdpi.com/1422-0067/14/12/23980 |
| article html file updated | 7 May 2019 21:07 CEST | Update | - |
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| article html file updated | 19 August 2015 12:58 CEST | Update | - |
| article html file updated | 31 December 2013 09:27 CET | Original file | - |
| article xml file uploaded | 31 December 2013 09:26 CET | Original file | https://www.mdpi.com/1422-0067/14/12/23980/xml |
| article pdf uploaded. | 9 December 2013 12:18 CET | Version of Record | https://www.mdpi.com/1422-0067/14/12/23980/pdf |
