| article html file updated | 8 February 2020 04:55 CET | Update | https://www.mdpi.com/2311-7524/3/2/30 |
| article html file updated | 24 September 2019 15:06 CEST | Update | - |
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| article html file updated | 23 May 2017 03:33 CEST | Update | - |
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| article xml uploaded. | 4 May 2017 09:56 CEST | Update | https://www.mdpi.com/2311-7524/3/2/30/xml |
| article pdf uploaded. | 4 May 2017 09:56 CEST | Updated version of record | https://www.mdpi.com/2311-7524/3/2/30/pdf |
| article html file updated | 3 May 2017 16:02 CEST | Original file | - |
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