| article html file updated | 8 February 2020 01:24 CET | Update | https://www.mdpi.com/2304-8158/6/3/22 |
| article html file updated | 23 September 2019 19:26 CEST | Update | - |
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| article html file updated | 28 March 2017 10:16 CEST | Update | - |
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| article xml uploaded. | 14 March 2017 16:53 CET | Original file | https://www.mdpi.com/2304-8158/6/3/22/xml |
| article pdf uploaded. | 14 March 2017 16:53 CET | Version of Record | https://www.mdpi.com/2304-8158/6/3/22/pdf |
