| article html file updated | 6 February 2020 05:16 CET | Update | https://www.mdpi.com/1422-0067/14/11/21551 |
| article html file updated | 20 September 2019 02:41 CEST | Update | - |
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| article html file updated | 9 December 2013 08:36 CET | Original file | - |
| article xml file uploaded | 9 December 2013 08:35 CET | Original file | https://www.mdpi.com/1422-0067/14/11/21551/xml |
| article pdf uploaded. | 31 October 2013 10:58 CET | Version of Record | https://www.mdpi.com/1422-0067/14/11/21551/pdf |
