| article html file updated | 7 February 2020 12:59 CET | Update | https://www.mdpi.com/2220-9964/5/8/138 |
| article html file updated | 5 May 2019 07:43 CEST | Update | - |
| article html file updated | 27 March 2019 12:58 CET | Update | - |
| article html file updated | 30 August 2016 03:49 CEST | Update | - |
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| article html file updated | 8 August 2016 10:53 CEST | Original file | - |
| article xml uploaded. | 8 August 2016 09:35 CEST | Update | https://www.mdpi.com/2220-9964/5/8/138/xml |
| article pdf uploaded. | 8 August 2016 09:35 CEST | Version of Record | https://www.mdpi.com/2220-9964/5/8/138/pdf |
