| article html file updated | 7 February 2020 23:46 CET | Update | https://www.mdpi.com/2304-6732/4/1/12 |
| article html file updated | 23 September 2019 10:05 CEST | Update | - |
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| article html file updated | 29 March 2017 08:52 CEST | Update | - |
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| article xml uploaded. | 20 February 2017 10:28 CET | Original file | https://www.mdpi.com/2304-6732/4/1/12/xml |
| article pdf uploaded. | 20 February 2017 10:28 CET | Version of Record | https://www.mdpi.com/2304-6732/4/1/12/pdf |
