Optimal Bipartite Ramanujan Graphs from Balanced Incomplete Block Designs: Their Characterizations and Applications to Expander/LDPC Codes.

Tom Høholdt Heeralal Janwa Optimal Bipartite Ramanujan Graphs from Balanced Incomplete Block Designs: Their Characterizations and Applications to Expander/LDPC Codes. 53-64 2009 AAECC http://dx.doi.org/10.1007/978-3-642-02181-7_6 conf/aaecc/2009 db/conf/aaecc/aaecc2009.html#HoholdtJ09