Erratum to: “Ruled surfaces with time like rulings” [Appl. Math. Comput. 147 (2004) 241–248]

In this article, a new type of ruled surfaces in a Lorentz 3-space R13 is obtained by a strictly connected time-like oriented line moving with Frenet’s frame along a space-like curve. These surfaces are classified into time-like and space-like surfaces. The well-known theorems due to Bonnet and Chasles in the 3-dimensional Euclidean space are proved for a time-like ruled surface.