| article html file updated | 9 February 2020 04:13 CET | Update | https://www.mdpi.com/1996-1073/11/2/284 |
| article html file updated | 30 September 2019 04:39 CEST | Update | N/A |
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| article html file updated | 14 March 2018 15:26 CET | Update | N/A |
| article html file updated | 24 January 2018 18:04 CET | Original file | N/A |
| article xml uploaded. | 24 January 2018 18:03 CET | Original file | https://www.mdpi.com/1996-1073/11/2/284/xml |
| article pdf uploaded. | 24 January 2018 18:02 CET | Version of Record | https://www.mdpi.com/1996-1073/11/2/284/pdf |
