Jau-Yang Liu Jyh-Horng Michael Tarn H. Joseph Wen Adopting e-commerce Web site operation modes: The current state of large US firms. 73-90 2004 12 Inf. Manag. Comput. Security 1 http://dx.doi.org/10.1108/09685220410518847 db/journals/imcs/imcs12.html#LiuTW04