| article html file updated | 7 February 2020 21:07 CET | Update | https://www.mdpi.com/2075-4450/8/1/7 |
| article html file updated | 4 May 2019 16:05 CEST | Update | N/A |
| article html file updated | 30 March 2017 11:01 CEST | Update | N/A |
| article html file updated | 10 January 2017 11:13 CET | Update | N/A |
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| article html file updated | 10 January 2017 11:13 CET | Original file | N/A |
| article xml uploaded. | 10 January 2017 11:12 CET | Original file | https://www.mdpi.com/2075-4450/8/1/7/xml |
| article pdf uploaded. | 10 January 2017 11:12 CET | Version of Record | https://www.mdpi.com/2075-4450/8/1/7/pdf |
