@phdthesis{TUW-111998, author = {Lechner, Gottfried}, title = {Efficient Decoding Techniques for LDPC Codes}, school = {Institut f{\"u}r Nachrichtentechnik und Hochfrequenztechnik}, year = {2007}, url = {http://publik.tuwien.ac.at/files/pub-et_12989.pdf} }