| article html file updated | 8 February 2020 05:46 CET | Update | https://www.mdpi.com/2078-2489/8/2/54 |
| article html file updated | 24 September 2019 19:29 CEST | Update | N/A |
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| article html file updated | 28 June 2017 13:48 CEST | Update | N/A |
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| article html file updated | 12 May 2017 16:18 CEST | Original file | N/A |
| article xml uploaded. | 12 May 2017 16:17 CEST | Original file | https://www.mdpi.com/2078-2489/8/2/54/xml |
| article pdf uploaded. | 12 May 2017 16:17 CEST | Version of Record | https://www.mdpi.com/2078-2489/8/2/54/pdf |
