| article html file updated | 8 February 2020 22:25 CET | Update | https://www.mdpi.com/2075-4434/5/4/88 |
| article html file updated | 28 September 2019 19:19 CEST | Update | - |
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| article html file updated | 2 January 2018 17:13 CET | Update | - |
| article html file updated | 28 November 2017 07:32 CET | Original file | - |
| article xml uploaded. | 28 November 2017 07:31 CET | Original file | https://www.mdpi.com/2075-4434/5/4/88/xml |
| article pdf uploaded. | 28 November 2017 07:31 CET | Version of Record | https://www.mdpi.com/2075-4434/5/4/88/pdf |
