| article html file updated | 30 August 2025 02:33 CEST | Update | https://www.mdpi.com/2218-1997/4/2/30 |
| article html file updated | 16 July 2022 09:08 CEST | Update | N/A |
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| article html file updated | 14 March 2018 09:42 CET | Update | N/A |
| article pdf uploaded. | 26 February 2018 07:24 CET | Updated version of record | https://www.mdpi.com/2218-1997/4/2/30/pdf |
| article html file updated | 26 February 2018 06:48 CET | Update | N/A |
| article xml uploaded. | 26 February 2018 06:47 CET | Update | https://www.mdpi.com/2218-1997/4/2/30/xml |
| article html file updated | 26 February 2018 06:41 CET | Update | N/A |
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| article xml uploaded. | 26 February 2018 06:23 CET | Update | N/A |
| article pdf uploaded. | 26 February 2018 06:23 CET | Updated version of record | https://www.mdpi.com/2218-1997/4/2/30/pdf-vor |
| article html file updated | 8 February 2018 17:35 CET | Original file | N/A |
| article xml uploaded. | 8 February 2018 17:34 CET | Update | N/A |
| article pdf uploaded. | 8 February 2018 17:34 CET | Version of Record | https://www.mdpi.com/2218-1997/4/2/30/pdf-vor |
| article xml uploaded. | 8 February 2018 17:34 CET | Original file | N/A |
