This author has not been identified. Look up 'Tomás Pop' in GoogleThis author has not been identified. Look up 'Petr Hnetynka' in GoogleThis author has not been identified. It may be one of the following persons: Look up 'Petr Hosek' in GoogleThis author has not been identified. It may be one of the following persons: Look up 'Michal Malohlava' in GoogleThis author has not been identified. Look up 'Tomás Bures' in Google