This author has not been identified. Look up 'Jukka M. Toivanen' in GoogleThis author has not been identified. Look up 'Matti Järvisalo' in GoogleThis author has not been identified. Look up 'Olli Alm' in GoogleThis author has not been identified. Look up 'Dan Ventura' in GoogleThis author has not been identified. Look up 'Martti Vainio' in GoogleThis author has not been identified. Look up 'Hannu Toivonen' in Google