Kazuo Iwama Harumichi Nishimura Mike Paterson Rudy Raymond Shigeru Yamashita Polynomial-Time Construction of Linear Network Coding. 271-282 2008 ICALP (1) http://dx.doi.org/10.1007/978-3-540-70575-8_23 conf/icalp/2008-1 db/conf/icalp/icalp2008-1.html#IwamaNPRY08