Annu Ristola
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Timo Koivumäki,
Annu Ristola,
Manne Kesti,
2006,
Personal and Ubiquitous Computing.
Johanna Still,
Annu Ristola,
Hanna Komulainen,
2006,
2006 International Conference on Mobile Business.
Timo Koivumäki,
Annu Ristola,
Manne Kesti,
2006,
Int. J. Mob. Commun..
Timo Ojala,
Mikko Koskinen,
Jani Korhonen,
2006,
Personal and Ubiquitous Computing.
Timo Koivumäki,
Annu Ristola,
Manne Kesti,
2008,
Behav. Inf. Technol..
Timo Koivumäki,
Annu Ristola,
Manne Kesti,
2005,
International Conference on Mobile Business (ICMB'05).
Wesley J. Johnston,
Pauliina Ulkuniemi,
Annu Ristola,
2013
.