open abdata.gdt

# Partial replication of results in Blundell and Bond, Journal
# of Econometrics, 1998. Please see the Gretl User's Guide for
# a detailed discussion.

# compose list of regressors
list X = w w(-1) k k(-1)
list Z = w k

# Blundell and Bond, Table 4: 1976-86 GMM-DIF
dpanel 1 ; n X const ; GMM(Z,2,99) --time --two-step --dpd

# Blundell and Bond, Table 4: 1976-86 GMM-SYS
dpanel 1 ; n X const ; GMM(Z,2,99) GMMlevel(Z,1,1) \
  --time --two-step --dpd --system