(2017-01-25) Helenius, Teemu; Kaupinmäki, Santeri; Siltanen, Samuli; Villacis, David; University of Helsinki - Helenius, Teemu; University of Helsinki - Kaupinmäki, Santeri; University of Helsinki - Siltanen, Samuli; Escuela Politécnica Nacional Quito - Villacis, David