| article html file updated | 8 February 2020 09:20 CET | Update | https://www.mdpi.com/2076-3417/7/7/661 |
| article html file updated | 3 May 2019 15:28 CEST | Update | - |
| article html file updated | 31 July 2017 06:25 CEST | Update | - |
| article html file updated | 29 June 2017 04:06 CEST | Original file | - |
| article xml uploaded. | 29 June 2017 04:04 CEST | Original file | https://www.mdpi.com/2076-3417/7/7/661/xml |
| article pdf uploaded. | 29 June 2017 04:04 CEST | Updated version of record | https://www.mdpi.com/2076-3417/7/7/661/pdf |
| article pdf uploaded. | 27 June 2017 11:17 CEST | Version of Record | https://www.mdpi.com/2076-3417/7/7/661/pdf-vor |
