| article html file updated | 9 February 2020 09:54 CET | Update | https://www.mdpi.com/2227-7390/6/3/44 |
| article html file updated | 1 October 2019 15:29 CEST | Update | - |
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| article html file updated | 26 March 2018 12:47 CEST | Update | - |
| article html file updated | 15 March 2018 05:46 CET | Original file | - |
| article xml uploaded. | 15 March 2018 05:45 CET | Original file | https://www.mdpi.com/2227-7390/6/3/44/xml |
| article pdf uploaded. | 15 March 2018 05:45 CET | Version of Record | https://www.mdpi.com/2227-7390/6/3/44/pdf |
