@incollection{2017:hannukainen:biomethane,
title = {Biomethane as tractor fuel – Opportunities for customer,  manufacturer or climate},
year = {2017},
note = {},
booktitle = {Land.Technik AgEng 2017},
pages = {355--366},
edition = {1},
author = {Hannukainen, P. and Åman, R.},
publisher = {VDI Verlag},
address = {Düsseldorf},
series = {VDI-Berichte},
volume = {2300}
}