| article html file updated | 8 February 2020 22:47 CET | Update | https://www.mdpi.com/2220-9964/6/12/394 |
| article html file updated | 28 September 2019 21:34 CEST | Update | - |
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| article html file updated | 1 December 2017 12:55 CET | Original file | - |
| article xml uploaded. | 1 December 2017 12:54 CET | Update | https://www.mdpi.com/2220-9964/6/12/394/xml |
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| article pdf uploaded. | 1 December 2017 12:54 CET | Version of Record | https://www.mdpi.com/2220-9964/6/12/394/pdf |