| article html file updated | 8 February 2020 05:31 CET | Update | https://www.mdpi.com/2073-445X/6/2/33 |
| article html file updated | 24 September 2019 18:10 CEST | Update | - |
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| article xml uploaded. | 10 May 2017 13:24 CEST | Update | https://www.mdpi.com/2073-445X/6/2/33/xml |
| article pdf uploaded. | 10 May 2017 13:24 CEST | Updated version of record | https://www.mdpi.com/2073-445X/6/2/33/pdf |
| article html file updated | 10 May 2017 13:23 CEST | Original file | - |