| article html file updated | 7 February 2020 05:58 CET | Update | https://www.mdpi.com/2073-4360/8/3/87 |
| article html file updated | 21 September 2019 13:14 CEST | Update | - |
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| article html file updated | 26 March 2019 23:36 CET | Update | - |
| article html file updated | 15 March 2019 12:00 CET | Update | - |
| article html file updated | 30 March 2016 07:57 CEST | Original file | - |
| article xml uploaded. | 16 March 2016 10:45 CET | Original file | https://www.mdpi.com/2073-4360/8/3/87/xml |
| article pdf uploaded. | 16 March 2016 10:45 CET | Version of Record | https://www.mdpi.com/2073-4360/8/3/87/pdf |
