Allison P. Heath George N. Bennett Lydia E. Kavraki Identifying Branched Metabolic Pathways by Merging Linear Metabolic Pathways. 70-84 2011 RECOMB http://dx.doi.org/10.1007/978-3-642-20036-6_9 conf/recomb/2011 db/conf/recomb/recomb2011.html#HeathBK11