@inproceedings{c5ea20da1e7b429b891c12172428729f,
title = "Ecological Footprint comparison of different means of transportation based on Sustainable Process Index (SPI) methodology",
author = "Karl-Heinz Kettl",
year = "2011",
language = "English",
isbn = "978-989-8481-03-0",
pages = "121--127",
booktitle = "SIM2011 - Sustainable Intelligent Manufacturing",
publisher = "IST Press",
note = "International Conference on Sustainable Intelligent Manufacturing ; Conference date: 29-06-2011 Through 01-07-2011",
}