| article html file updated | 9 February 2020 00:56 CET | Update | https://www.mdpi.com/2227-7080/6/1/3 |
| article html file updated | 29 September 2019 10:12 CEST | Update | N/A |
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| article html file updated | 22 December 2017 14:14 CET | Original file | N/A |
| article xml uploaded. | 22 December 2017 14:13 CET | Original file | https://www.mdpi.com/2227-7080/6/1/3/xml |
| article pdf uploaded. | 22 December 2017 14:13 CET | Version of Record | https://www.mdpi.com/2227-7080/6/1/3/pdf |
