| article html file updated | 5 February 2020 09:04 CET | Update | https://www.mdpi.com/1420-3049/12/6/1220 |
| article html file updated | 18 September 2019 13:21 CEST | Update | N/A |
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| article html file updated | 10 September 2018 09:34 CEST | Update | N/A |
| article html file updated | 14 February 2017 12:11 CET | Original file | N/A |
