| article html file updated | 6 February 2020 14:28 CET | Update | https://www.mdpi.com/2073-8994/6/4/1026 |
| article html file updated | 20 September 2019 16:00 CEST | Update | - |
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| article html file updated | 31 December 2014 03:31 CET | Original file | - |
| article xml file uploaded | 31 December 2014 03:31 CET | Original file | https://www.mdpi.com/2073-8994/6/4/1026/xml |
| article pdf uploaded. | 15 December 2014 11:02 CET | Version of Record | https://www.mdpi.com/2073-8994/6/4/1026/pdf |
