| article html file updated | 6 February 2020 15:04 CET | Update | https://www.mdpi.com/2072-6651/7/1/81 |
| article html file updated | 7 May 2019 02:41 CEST | Update | - |
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| article xml file uploaded | 23 January 2015 11:54 CET | Original file | https://www.mdpi.com/2072-6651/7/1/81/xml |
| article supplementary file uploaded. | 9 January 2015 13:12 CET | - | https://www.mdpi.com/2072-6651/7/1/81#supplementary |
| article pdf uploaded. | 9 January 2015 13:12 CET | Version of Record | https://www.mdpi.com/2072-6651/7/1/81/pdf |