TY  - DATA
AU  - Zak, F. L.
TI  - Tangents and secants of algebraic varieties 
T2  - Translations of Mathematical Monographs, 
SN  - 9781470445355 (online)
PY  - 1993///
CY  - Providence, R.I.
PB  - American Mathematical Society
KW  - Algebraic varieties
N1  - Includes bibliographical references (p. 155-159) and index
UR  - https://doi.org/10.1090/mmono/127
ER  -