forward substitution, back substitution, and MV normal with zero-sum constraint
forward substitution, back substitution, and MV normal with zero-sum constraint

zxsted/Mallet,zxsted/Mallet,RWArunde/Mallet,ohjeyong/mallet,ohjeyong/mallet,palm-toolkit/Mallet,lewg/Mallet,zxsted/Mallet,RWArunde/Mallet,steveash/Mallet,carschno/Mallet,lewg/Mallet,steveash/Mallet,carschno/Mallet,RWArunde/Mallet,carschno/Mallet,steveash/Mallet,palm-toolkit/Mallet,ohjeyong/mallet,lewg/Mallet