| article html file updated | 6 February 2020 09:57 CET | Update | https://www.mdpi.com/1422-0067/15/6/10821 |
| article html file updated | 7 May 2019 13:08 CEST | Update | - |
| article html file updated | 21 March 2019 18:49 CET | Update | - |
| article html file updated | 20 August 2015 09:55 CEST | Update | - |
| article html file updated | 16 July 2014 08:50 CEST | Update | - |
| article xml file uploaded | 16 July 2014 08:50 CEST | Update | https://www.mdpi.com/1422-0067/15/6/10821/xml |
| article html file updated | 11 July 2014 10:28 CEST | Update | - |
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| article html file updated | 8 July 2014 10:30 CEST | Original file | - |
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| article pdf uploaded. | 16 June 2014 08:42 CEST | Version of Record | https://www.mdpi.com/1422-0067/15/6/10821/pdf |