| article html file updated | 7 February 2020 23:36 CET | Update | https://www.mdpi.com/2072-666X/8/2/60 |
| article html file updated | 23 September 2019 09:07 CEST | Update | N/A |
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| article xml uploaded. | 17 February 2017 04:50 CET | Original file | https://www.mdpi.com/2072-666X/8/2/60/xml |
| article pdf uploaded. | 17 February 2017 04:50 CET | Version of Record | https://www.mdpi.com/2072-666X/8/2/60/pdf |
