Sources

Every source backing a fact on Pekka Ketola's own page, deduplicated — the same source backing several facts appears once.

• https://dl.acm.org/doi/proceedings/10.1145/1085777 — https://dl.acm.org/doi/proceedings/10.1145/1085777
• https://dl.acm.org/doi/proceedings/10.1145/1152215 — https://dl.acm.org/doi/proceedings/10.1145/1152215
• https://dl.acm.org/doi/proceedings/10.1145/1377999 — https://dl.acm.org/doi/proceedings/10.1145/1377999
• https://link.springer.com/book/10.1007/b100594 — https://link.springer.com/book/10.1007/b100594
• https://link.springer.com/book/10.1007/b12029 — https://link.springer.com/book/10.1007/b12029
• https://personal.cis.strath.ac.uk/mark.dunlop/mobilehci01/ — https://personal.cis.strath.ac.uk/mark.dunlop/mobilehci01/