| article html file updated | 23 October 2025 06:24 CEST | Update | https://www.mdpi.com/2076-2615/6/2/12 |
| article html file updated | 7 February 2020 04:32 CET | Update | N/A |
| article html file updated | 21 September 2019 11:17 CEST | Update | N/A |
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| article html file updated | 26 March 2019 20:41 CET | Original file | N/A |
| article pdf uploaded. | 15 February 2016 10:50 CET | Version of Record | https://www.mdpi.com/2076-2615/6/2/12/pdf |
| article xml uploaded. | 15 February 2016 10:50 CET | Original file | https://www.mdpi.com/2076-2615/6/2/12/xml |
