| article html file updated | 7 February 2020 20:02 CET | Update | https://www.mdpi.com/2076-3425/6/4/65 |
| article html file updated | 22 September 2019 13:46 CEST | Update | - |
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| article html file updated | 27 December 2016 02:19 CET | Update | - |
| article html file updated | 21 December 2016 10:24 CET | Original file | - |
| article xml uploaded. | 21 December 2016 10:22 CET | Update | https://www.mdpi.com/2076-3425/6/4/65/xml |
| article xml uploaded. | 21 December 2016 10:22 CET | Original file | - |
| article pdf uploaded. | 21 December 2016 10:22 CET | Version of Record | https://www.mdpi.com/2076-3425/6/4/65/pdf |
