| Type | Info | Provider | Full Text |
|---|---|---|---|
| publishers/providers | free resource full-text pdf publisher of information in url | Multidisciplinary Digital Publishing Institute (MDPI) | |
| aggregators | free resource full-text online preference | Europe PubMed Central | |
| aggregators | free resource full-text online preference show icon | PubMed Central | |
| institutional repository | free resource full-text pdf | Diposit Digital de la Universitat de Barcelona | |
| patent databases | free resource | The Lens - Patent Citations | |