| article html file updated | 8 February 2020 07:12 CET | Update | https://www.mdpi.com/2075-163X/7/6/90 |
| article html file updated | 3 May 2019 19:30 CEST | Update | N/A |
| article html file updated | 28 June 2017 14:10 CEST | Update | N/A |
| article html file updated | 2 June 2017 04:43 CEST | Original file | N/A |
| article xml uploaded. | 2 June 2017 04:39 CEST | Original file | https://www.mdpi.com/2075-163X/7/6/90/xml |
| article pdf uploaded. | 2 June 2017 04:39 CEST | Updated version of record | https://www.mdpi.com/2075-163X/7/6/90/pdf |
| article pdf uploaded. | 1 June 2017 12:06 CEST | Version of Record | https://www.mdpi.com/2075-163X/7/6/90/pdf-vor |
