1. 1) Kottenhoff, K.: "Evaluation of Passenger Train Concepts-Methods and results of measuring travellers' preferences in relation to costs," Kungliga Tekniska Hogskolan (Royal Institute of Technology) Traffic & Transport Planning, TRITA-IP FR-99-48, 1999.
2. 2) Quigley, C., Southall, D., Freer, M., Moody, A. and Porter, M.: "Anthropometric Study to Update Minimum Aircraft Seating Standards," ICE Ergonomics Ltd. (www.ice.co.uk) 2001.
3. 3) Suzuki, H., Shiroto, H. and Omino, K.: "Identification of factors determining comfort of train (in Japanese)," RTRI Report, Vol.11, No.11, pp.31-36, 1997.
4. 4) Andrew, W., Frances R., Jeniifer, W. and Heather, J.: "The quality of railway carriage environments," Applied Ergonomics, Vol.4, No.4, pp.194-198, 1973.
5. What the passenger contributes to passenger comfort