| article html file updated | 8 February 2020 07:39 CET | Update | https://www.mdpi.com/2309-608X/3/2/30 |
| article html file updated | 25 September 2019 05:13 CEST | Update | - |
| article html file updated | 3 May 2019 18:38 CEST | Update | - |
| article html file updated | 11 December 2018 08:55 CET | Update | - |
| article html file updated | 9 June 2017 04:15 CEST | Original file | - |
| article xml uploaded. | 9 June 2017 04:13 CEST | Original file | https://www.mdpi.com/2309-608X/3/2/30/xml |
| article pdf uploaded. | 9 June 2017 04:13 CEST | Updated version of record | https://www.mdpi.com/2309-608X/3/2/30/pdf |
| article pdf uploaded. | 7 June 2017 11:29 CEST | Version of Record | https://www.mdpi.com/2309-608X/3/2/30/pdf-vor |
