| article html file updated | 9 February 2020 03:35 CET | Update | https://www.mdpi.com/2076-3271/6/1/7 |
| article html file updated | 2 May 2019 01:10 CEST | Update | N/A |
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| article html file updated | 28 March 2019 16:45 CET | Update | N/A |
| article html file updated | 28 March 2018 10:21 CEST | Update | N/A |
| article html file updated | 19 January 2018 06:22 CET | Original file | N/A |
| article xml uploaded. | 19 January 2018 06:21 CET | Original file | https://www.mdpi.com/2076-3271/6/1/7/xml |
| article pdf uploaded. | 19 January 2018 06:21 CET | Version of Record | https://www.mdpi.com/2076-3271/6/1/7/pdf |
