| article html file updated | 8 February 2020 03:13 CET | Update | https://www.mdpi.com/2076-3425/7/4/39 |
| article html file updated | 24 September 2019 05:46 CEST | Update | N/A |
| article html file updated | 4 May 2019 02:54 CEST | Update | N/A |
| article html file updated | 28 April 2017 05:33 CEST | Update | N/A |
| article html file updated | 10 April 2017 08:07 CEST | Original file | N/A |
| article xml uploaded. | 10 April 2017 08:06 CEST | Original file | https://www.mdpi.com/2076-3425/7/4/39/xml |
| article pdf uploaded. | 10 April 2017 08:06 CEST | Version of Record | https://www.mdpi.com/2076-3425/7/4/39/pdf |
