Henry C. Lefkovits
发表
Henry C. Lefkovits,
H. Lefkovits,
1991
.
Edgar H. Sibley,
Henry C. Lefkovits,
Sandra L. Lefkovits,
1983
.
Henry C. Lefkovits,
H. Lefkovits,
1978,
SIGMOD Rec..
Edgar H. Sibley,
James P. Fry,
W. C. McGee,
1971
.
Edwin F. Kerr,
Lawrence K. Grodman,
Henry C. Lefkovits,
1977
.
Henry C. Lefkovits,
1976,
SGMD.