On Timelike Tubular Weingarten Surfaces in Minkowski 3-Space
  In this paper, we study the timelike tubular Weingarten surfaces in 3-dimensional Minkowski space $IR_1^3 $.We have obtained some conditions for being $({K_{II},H})$, $({K_{II},K})$, timelike tubular Weingarten surfaces where are the second Gaussian curvature the Gaussian curvature and the mean curvature, respectively. 
Ayse Zeynep Azak, Melek Masal, Serpil Hal{\i}c{\i}
math.DG