| article html file updated | 8 February 2020 04:54 CET | Update | https://www.mdpi.com/2227-7072/5/2/13 |
| article html file updated | 24 September 2019 15:01 CEST | Update | N/A |
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| article html file updated | 28 June 2017 13:16 CEST | Update | N/A |
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| article html file updated | 3 May 2017 13:20 CEST | Original file | N/A |
| article xml uploaded. | 3 May 2017 13:19 CEST | Original file | https://www.mdpi.com/2227-7072/5/2/13/xml |
| article pdf uploaded. | 3 May 2017 13:19 CEST | Version of Record | https://www.mdpi.com/2227-7072/5/2/13/pdf |
