| article html file updated | 8 February 2020 22:00 CET | Update | https://www.mdpi.com/2313-433X/3/4/53 |
| article html file updated | 28 September 2019 16:47 CEST | Update | N/A |
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| article html file updated | 18 April 2019 10:48 CEST | Update | N/A |
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| article html file updated | 23 November 2017 14:09 CET | Original file | N/A |
| article xml uploaded. | 23 November 2017 14:08 CET | Original file | https://www.mdpi.com/2313-433X/3/4/53/xml |
| article pdf uploaded. | 23 November 2017 14:08 CET | Version of Record | https://www.mdpi.com/2313-433X/3/4/53/pdf |
