The Bessel Numbers and Bessel Matrices
Received:January 05, 2010  Revised:May 28, 2010
Key Words: $k$-walk-regular digraph   predistance polynomial   the crossed $uv$-local multiplicity.  
Fund Project:Supported by the National Natural Science Foundation of China (Grant Nos.10771051; 10971052), the National Natural Foundation of Hebei Province (Grant No.A2008000128), Educational Committee of Hebei Province (Grant No.2009134) and Youth Science Foundation of Hebei Normal University (Grant No.L2008Q01).
Author NameAffiliation
Wen LIU Mathematics and Information College, Hebei Normal University, Hebei 050016, P. R. China 
Jing LIU School of Mathematical Sciences, Beijing Normal University, Beijing 100875, P. R. China 
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Citation:
DOI:10.3770/j.issn:1000-341X.2011.04.007
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