| article html file updated | 8 February 2020 16:34 CET | Update | https://www.mdpi.com/2306-5729/2/3/31 |
| article html file updated | 27 September 2019 05:34 CEST | Update | N/A |
| article html file updated | 3 May 2019 01:17 CEST | Update | N/A |
| article html file updated | 19 September 2017 12:21 CEST | Original file | N/A |
| article xml uploaded. | 19 September 2017 12:20 CEST | Update | https://www.mdpi.com/2306-5729/2/3/31/xml |
| article xml uploaded. | 19 September 2017 12:20 CEST | Original file | N/A |
| article pdf uploaded. | 19 September 2017 12:20 CEST | Version of Record | https://www.mdpi.com/2306-5729/2/3/31/pdf |
