| article html file updated | 11 February 2020 07:49 CET | Update | https://www.mdpi.com/2221-3759/7/1/2 |
| article html file updated | 27 April 2019 09:03 CEST | Update | N/A |
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| article html file updated | 10 April 2019 16:29 CEST | Update | N/A |
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| article html file updated | 17 January 2019 03:07 CET | Update | N/A |
| article pdf uploaded. | 17 January 2019 03:07 CET | Updated version of record | https://www.mdpi.com/2221-3759/7/1/2/pdf |
| article html file updated | 14 January 2019 08:02 CET | Original file | N/A |
| article pdf uploaded. | 14 January 2019 07:59 CET | Updated version of record | N/A |
| article xml uploaded. | 14 January 2019 07:59 CET | Update | https://www.mdpi.com/2221-3759/7/1/2/xml |
| article xml file uploaded | 14 January 2019 07:59 CET | Update | N/A |
| article pdf uploaded. | 9 January 2019 18:35 CET | Updated version of record | N/A |
| article xml file uploaded | 9 January 2019 18:24 CET | Original file | N/A |
