| article html file updated | 5 February 2020 21:24 CET | Update | https://www.mdpi.com/2073-4360/4/3/1443 |
| article html file updated | 8 May 2019 16:02 CEST | Update | N/A |
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| article html file updated | 17 June 2015 01:25 CEST | Update | N/A |
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| article xml file uploaded | 5 March 2015 11:20 CET | Original file | https://www.mdpi.com/2073-4360/4/3/1443/xml |
| article html file updated | 7 February 2013 13:59 CET | Update | N/A |
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| article html file updated | 23 January 2013 23:10 CET | Original file | N/A |
