| article html file updated | 7 February 2020 17:11 CET | Update | https://www.mdpi.com/1424-8247/9/4/65 |
| article html file updated | 22 September 2019 04:15 CEST | Update | N/A |
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| article html file updated | 27 October 2017 10:44 CEST | Update | N/A |
| article html file updated | 29 December 2016 11:49 CET | Update | N/A |
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| article xml uploaded. | 29 October 2016 06:34 CEST | Original file | https://www.mdpi.com/1424-8247/9/4/65/xml |
| article pdf uploaded. | 29 October 2016 06:34 CEST | Version of Record | https://www.mdpi.com/1424-8247/9/4/65/pdf |
