| article html file updated | 6 February 2020 00:56 CET | Update | https://www.mdpi.com/2220-9964/2/1/155 |
| article html file updated | 8 May 2019 07:31 CEST | Update | - |
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| article html file updated | 17 June 2015 07:23 CEST | Update | - |
| article html file updated | 14 August 2014 12:05 CEST | Original file | - |
| article xml file uploaded | 14 August 2014 12:05 CEST | Original file | https://www.mdpi.com/2220-9964/2/1/155/xml |
| article pdf uploaded. | 11 March 2013 15:19 CET | Version of Record | https://www.mdpi.com/2220-9964/2/1/155/pdf |
