| article html file updated | 9 February 2020 11:32 CET | Update | https://www.mdpi.com/2075-4701/8/4/220 |
| article html file updated | 2 October 2019 01:03 CEST | Update | - |
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| article html file updated | 17 April 2019 08:04 CEST | Update | - |
| article html file updated | 29 March 2019 10:27 CET | Update | - |
| article html file updated | 1 May 2018 07:23 CEST | Update | - |
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| article html file updated | 28 March 2018 07:01 CEST | Original file | - |
| article xml uploaded. | 28 March 2018 06:59 CEST | Update | https://www.mdpi.com/2075-4701/8/4/220/xml |
| article pdf uploaded. | 28 March 2018 06:59 CEST | Version of Record | https://www.mdpi.com/2075-4701/8/4/220/pdf |
