TY  - JOUR
AU  - Tang,  Min
TI  - Relatively prime sets and a Phi function for subsets of \(\{1, 2,\dots, n\}\)
JO  - Journal of integer sequences
PY  - 2010
VL  - 13
IS  - 7
UR  - http://geodesic.mathdoc.fr/item/JIS_2010__13_7_a3/
LA  - en
ID  - JIS_2010__13_7_a3
ER  -