TY  - RPRT
TI  - Derivative-free restricted maximum likelihood estimation in animal models with a sparse matrix solver.
AU  - K G Boldman
AU  - L D Van Vleck
PY  - 1991
DO  - 10.3168/jds.s0022-0302(91)78629-3
UR  - https://pubmed.ncbi.nlm.nih.gov/1787202/
ID  - 1787202
ER  -