| article html file updated | 5 February 2020 10:27 CET | Update | https://www.mdpi.com/1422-0067/4/3/143 |
| article html file updated | 9 May 2019 15:09 CEST | Update | - |
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| article html file updated | 20 July 2017 04:39 CEST | Original file | - |
| article xml uploaded. | 20 July 2017 04:38 CEST | Original file | https://www.mdpi.com/1422-0067/4/3/143/xml |
