Provider: Japan Science and Technology Agency Database: J-STAGE Content:text/plain; charset="utf-8" TY - JOUR TI - IMPROVING APPROXIMATION RATIOS FOR THE CLUSTERED TRAVELING SALESMAN PROBLEM TI - AU - Kawasaki,Masamune AU - Takazawa,Kenjiro JO - Journal of the Operations Research Society of Japan VL - 63 IS - 2 SP - 60 EP - 70 PY - 2020 DO - 10.15807/jorsj.63.60 ER -