is there some place to study Singular Value Decomposition algorithms

[myn]

i want to study Singular Value Decomposition algorithms;
I also have a book called mahout in action,but i can`t found sth about this 
algorithm;
is there someplace introduce how to use the method?
till now DistributedLanczosSolver  is not a mapreduce method
org.apache.mahout.math.hadoop.decomposer.DistributedLanczosSolver = svd