| article html file updated | 8 February 2020 21:18 CET | Update | https://www.mdpi.com/2305-6304/5/4/32 |
| article html file updated | 28 September 2019 12:13 CEST | Update | N/A |
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| article xml uploaded. | 15 November 2017 13:10 CET | Original file | https://www.mdpi.com/2305-6304/5/4/32/xml |
| article pdf uploaded. | 15 November 2017 13:10 CET | Version of Record | https://www.mdpi.com/2305-6304/5/4/32/pdf |
