| article html file updated | 14 August 2026 13:48 CEST | Update | https://www.mdpi.com/1422-0067/18/4/820 |
| article html file updated | 8 February 2020 03:25 CET | Update | N/A |
| article html file updated | 24 September 2019 06:46 CEST | Update | N/A |
| article html file updated | 4 May 2019 02:32 CEST | Update | N/A |
| article html file updated | 2 May 2017 06:07 CEST | Update | N/A |
| article html file updated | 14 April 2017 07:57 CEST | Original file | N/A |
| article xml uploaded. | 14 April 2017 07:55 CEST | Original file | https://www.mdpi.com/1422-0067/18/4/820/xml |
| article pdf uploaded. | 14 April 2017 07:55 CEST | Updated version of record | https://www.mdpi.com/1422-0067/18/4/820/pdf |
| article pdf uploaded. | 12 April 2017 12:04 CEST | Version of Record | https://www.mdpi.com/1422-0067/18/4/820/pdf-vor |
