TY  - RPRT
TI  - Adjustment of a sparse and irregular reference rate matrix.
AU  - U Strömberg
AU  - V Horstmann
PY  - 1995
DO  - 10.1093/oxfordjournals.aje.a117620
UR  - https://pubmed.ncbi.nlm.nih.gov/7598121/
ID  - 7598121
ER  -