| article html file updated | 9 February 2020 04:06 CET | Update | https://www.mdpi.com/2071-1050/10/2/293 | 
| article html file updated | 30 September 2019 04:04 CEST | Update | - | 
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| article html file updated | 24 January 2018 03:16 CET | Original file | - | 
| article xml uploaded. | 24 January 2018 03:14 CET | Update | https://www.mdpi.com/2071-1050/10/2/293/xml | 
| article xml uploaded. | 23 January 2018 18:47 CET | Original file | - | 
| article pdf uploaded. | 23 January 2018 18:47 CET | Version of Record | https://www.mdpi.com/2071-1050/10/2/293/pdf |