| article html file updated | 7 February 2020 19:20 CET | Update | https://www.mdpi.com/2079-9292/5/4/88 |
| article html file updated | 22 September 2019 09:55 CEST | Update | - |
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| article html file updated | 29 December 2016 11:09 CET | Update | - |
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| article xml uploaded. | 9 December 2016 08:55 CET | Original file | https://www.mdpi.com/2079-9292/5/4/88/xml |
| article pdf uploaded. | 9 December 2016 08:55 CET | Version of Record | https://www.mdpi.com/2079-9292/5/4/88/pdf |
