| article html file updated | 5 February 2020 11:15 CET | Update | https://www.mdpi.com/1422-0067/1/3/39 |
| article html file updated | 9 May 2019 13:26 CEST | Update | - |
| article html file updated | 19 March 2019 16:33 CET | Update | - |
| article html file updated | 21 July 2017 07:48 CEST | Update | - |
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| article html file updated | 21 July 2017 07:47 CEST | Original file | - |
| article xml uploaded. | 21 July 2017 07:46 CEST | Original file | https://www.mdpi.com/1422-0067/1/3/39/xml |
