TY  - RPRT
TI  - Spatial codes and the hardness of string folding problems.
AU  - A Nayak
AU  - A Sinclair
AU  - U Zwick
PY  - 1999
DO  - 10.1089/cmb.1999.6.13
UR  - https://pubmed.ncbi.nlm.nih.gov/10223662/
ID  - 10223662
ER  -