| article html file updated | 11 February 2020 13:30 CET | Update | https://www.mdpi.com/2076-0752/8/1/20 |
| article html file updated | 26 April 2019 21:39 CEST | Update | N/A |
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| article pdf uploaded. | 2 February 2019 10:31 CET | Updated version of record | https://www.mdpi.com/2076-0752/8/1/20/pdf |
| article xml file uploaded | 2 February 2019 10:31 CET | Update | https://www.mdpi.com/2076-0752/8/1/20/xml |
| article html file updated | 2 February 2019 10:17 CET | Original file | N/A |
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