| article html file updated | 8 February 2020 08:16 CET | Update | https://www.mdpi.com/2075-4701/7/6/220 |
| article html file updated | 25 September 2019 08:22 CEST | Update | N/A |
| article html file updated | 3 May 2019 17:29 CEST | Update | N/A |
| article html file updated | 28 June 2017 14:04 CEST | Update | N/A |
| article html file updated | 15 June 2017 03:35 CEST | Original file | N/A |
| article xml uploaded. | 15 June 2017 03:34 CEST | Original file | https://www.mdpi.com/2075-4701/7/6/220/xml |
| article pdf uploaded. | 15 June 2017 03:34 CEST | Updated version of record | https://www.mdpi.com/2075-4701/7/6/220/pdf |
| article pdf uploaded. | 14 June 2017 15:55 CEST | Version of Record | https://www.mdpi.com/2075-4701/7/6/220/pdf-vor |
