| article html file updated | 9 February 2020 11:27 CET | Update | https://www.mdpi.com/1996-1944/11/4/502 | 
| article html file updated | 2 October 2019 00:33 CEST | Update | - | 
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| article html file updated | 27 March 2018 17:04 CEST | Update | - | 
| article html file updated | 27 March 2018 17:02 CEST | Original file | - | 
| article xml uploaded. | 27 March 2018 15:34 CEST | Update | https://www.mdpi.com/1996-1944/11/4/502/xml | 
| article pdf uploaded. | 27 March 2018 15:34 CEST | Updated version of record | https://www.mdpi.com/1996-1944/11/4/502/pdf |