| article html file updated | 9 February 2020 03:17 CET | Update | https://www.mdpi.com/2227-7102/8/1/14 |
| article html file updated | 2 May 2019 01:49 CEST | Update | - |
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| article html file updated | 28 March 2019 16:04 CET | Update | - |
| article html file updated | 27 March 2018 15:18 CEST | Update | - |
| article html file updated | 16 January 2018 16:16 CET | Original file | - |
| article xml uploaded. | 16 January 2018 16:15 CET | Original file | https://www.mdpi.com/2227-7102/8/1/14/xml |
| article pdf uploaded. | 16 January 2018 16:15 CET | Version of Record | https://www.mdpi.com/2227-7102/8/1/14/pdf |
