| article html file updated | 9 February 2020 08:38 CET | Update | https://www.mdpi.com/2079-9284/5/1/21 |
| article html file updated | 1 October 2019 06:54 CEST | Update | N/A |
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| article html file updated | 17 April 2019 13:51 CEST | Update | N/A |
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| article html file updated | 5 March 2018 09:55 CET | Original file | N/A |
| article xml uploaded. | 5 March 2018 09:54 CET | Original file | https://www.mdpi.com/2079-9284/5/1/21/xml |
| article pdf uploaded. | 5 March 2018 09:54 CET | Version of Record | https://www.mdpi.com/2079-9284/5/1/21/pdf |
