| | Contribution | No. | Studies |
| | Investigation study | 26 | S16, S20, S40, S41, S62, S42, S76, S3, S12, S15, S18, S21, S27, S30, S33, S47, S49, S50, S74, S72, SS53, S51, S77, S78, S80, S81 | | Evaluation study | 13 | S69, S14, S57, S4, S5, S9, S19, S29, S35, S34, S36, S37, S38 | | Model | 13 | S56, S7, S26, S28, S31, S43, S44, S45, S46, S48, S55, S54, S52 | | Framework | 7 | S10, S64, S13, S61, S67, S32, S73 | | System | 7 | S63, S39, S24, S6, S70, S60, S1 | | Approach | 4 | S11, S68, S8, S59 | | Tool | 3 | S22, S58, S23 | | Exploration study | 4 | S65, S25, S75, S79 | | Algorithm | 1 | S71 | | Taxonomy | 1 | S17 | | Protocol | 1 | S66 | | Method | 1 | S2 |
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