| article html file updated | 9 February 2020 09:50 CET | Update | https://www.mdpi.com/2227-7072/6/1/32 |
| article html file updated | 1 October 2019 15:05 CEST | Update | - |
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| article html file updated | 26 March 2018 15:49 CEST | Update | - |
| article html file updated | 14 March 2018 20:26 CET | Original file | - |
| article xml uploaded. | 14 March 2018 17:30 CET | Original file | https://www.mdpi.com/2227-7072/6/1/32/xml |
| article pdf uploaded. | 14 March 2018 17:30 CET | Version of Record | https://www.mdpi.com/2227-7072/6/1/32/pdf |
