| article html file updated | 7 February 2020 23:19 CET | Update | https://www.mdpi.com/1999-4915/9/2/30 |
| article html file updated | 23 September 2019 07:30 CEST | Update | N/A |
| article html file updated | 4 May 2019 11:24 CEST | Update | N/A |
| article html file updated | 2 March 2017 03:40 CET | Update | N/A |
| article html file updated | 16 February 2017 07:09 CET | Update | N/A |
| article xml uploaded. | 16 February 2017 07:07 CET | Update | https://www.mdpi.com/1999-4915/9/2/30/xml |
| article xml uploaded. | 16 February 2017 07:07 CET | Update | N/A |
| article pdf uploaded. | 16 February 2017 07:07 CET | Updated version of record | https://www.mdpi.com/1999-4915/9/2/30/pdf |
| article html file updated | 14 February 2017 05:57 CET | Original file | N/A |
| article xml uploaded. | 14 February 2017 05:55 CET | Original file | N/A |
| article pdf uploaded. | 14 February 2017 05:55 CET | Version of Record | https://www.mdpi.com/1999-4915/9/2/30/pdf-vor |
