| article html file updated | 8 February 2020 15:37 CET | Update | https://www.mdpi.com/2409-9287/2/3/21 |
| article html file updated | 27 September 2019 00:25 CEST | Update | N/A |
| article html file updated | 3 May 2019 03:01 CEST | Update | N/A |
| article html file updated | 8 September 2017 05:23 CEST | Original file | N/A |
| article xml uploaded. | 8 September 2017 05:22 CEST | Update | https://www.mdpi.com/2409-9287/2/3/21/xml |
| article xml uploaded. | 8 September 2017 05:22 CEST | Original file | N/A |
| article pdf uploaded. | 8 September 2017 05:22 CEST | Updated version of record | https://www.mdpi.com/2409-9287/2/3/21/pdf |
| article pdf uploaded. | 7 September 2017 16:09 CEST | Version of Record | https://www.mdpi.com/2409-9287/2/3/21/pdf-vor |
