| article html file updated | 7 February 2020 19:46 CET | Update | https://www.mdpi.com/2076-0825/5/4/26 |
| article html file updated | 22 September 2019 12:22 CEST | Update | - |
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| article html file updated | 29 December 2016 06:42 CET | Update | - |
| article html file updated | 16 December 2016 11:12 CET | Original file | - |
| article xml uploaded. | 16 December 2016 11:10 CET | Original file | https://www.mdpi.com/2076-0825/5/4/26/xml |
| article pdf uploaded. | 16 December 2016 11:10 CET | Version of Record | https://www.mdpi.com/2076-0825/5/4/26/pdf |
