| article html file updated | 9 February 2020 01:57 CET | Update | https://www.mdpi.com/1996-1944/11/1/68 |
| article html file updated | 29 September 2019 16:03 CEST | Update | N/A |
| article html file updated | 2 May 2019 04:31 CEST | Update | N/A |
| article html file updated | 18 April 2019 02:35 CEST | Update | N/A |
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| article html file updated | 1 February 2018 14:26 CET | Update | N/A |
| article html file updated | 4 January 2018 08:11 CET | Original file | N/A |
| article xml uploaded. | 4 January 2018 08:10 CET | Original file | https://www.mdpi.com/1996-1944/11/1/68/xml |
| article pdf uploaded. | 4 January 2018 08:10 CET | Version of Record | https://www.mdpi.com/1996-1944/11/1/68/pdf |
