| article html file updated | 9 February 2020 12:49 CET | Update | https://www.mdpi.com/2311-5629/4/2/21 |
| article html file updated | 2 October 2019 08:36 CEST | Update | N/A |
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| article html file updated | 16 April 2018 09:45 CEST | Update | N/A |
| article xml uploaded. | 16 April 2018 09:44 CEST | Update | https://www.mdpi.com/2311-5629/4/2/21/xml |
| article pdf uploaded. | 16 April 2018 09:44 CEST | Updated version of record | https://www.mdpi.com/2311-5629/4/2/21/pdf |
| article html file updated | 13 April 2018 12:33 CEST | Update | N/A |
| article pdf uploaded. | 13 April 2018 12:32 CEST | Updated version of record | https://www.mdpi.com/2311-5629/4/2/21/pdf-vor |
| article html file updated | 6 April 2018 12:55 CEST | Original file | N/A |
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