| article html file updated | 8 February 2020 01:20 CET | Update | https://www.mdpi.com/2073-445X/6/1/20 |
| article html file updated | 23 September 2019 19:06 CEST | Update | - |
| article html file updated | 4 May 2019 07:00 CEST | Update | - |
| article html file updated | 28 March 2017 11:58 CEST | Update | - |
| article html file updated | 13 March 2017 09:06 CET | Update | - |
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| article html file updated | 13 March 2017 09:06 CET | Original file | - |
| article xml uploaded. | 13 March 2017 09:04 CET | Update | https://www.mdpi.com/2073-445X/6/1/20/xml |
| article pdf uploaded. | 13 March 2017 09:04 CET | Version of Record | https://www.mdpi.com/2073-445X/6/1/20/pdf |
