Weingarten and Linear Weingarten Canal Surfaces
  In this study, we investigated the (K,H), (K,K_{II}), (H,K_{II})-Weingarten and (K,H),(K,K_{II}),(H,K_{II}) and (K,H,K_{II})-linear Weingarten canal surfaces in IR^3. 
Y{\i}lmaz Tun\c{c}er and Dae Won Yoon
math.DG