| article html file updated | 8 February 2020 02:06 CET | Update | https://www.mdpi.com/2073-4360/9/4/115 |
| article html file updated | 23 September 2019 23:33 CEST | Update | - |
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| article html file updated | 28 April 2017 10:34 CEST | Update | - |
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| article html file updated | 23 March 2017 16:18 CET | Original file | - |
| article xml uploaded. | 23 March 2017 16:17 CET | Update | https://www.mdpi.com/2073-4360/9/4/115/xml |
| article pdf uploaded. | 23 March 2017 16:17 CET | Version of Record | https://www.mdpi.com/2073-4360/9/4/115/pdf |
