Author's name: Joe Dellinger Title and company: Senior Researcher, BP Amoco Address: 7715 South Yale #1202, Tulsa OK 74136, USA E-mail: jdellinger@amoco.com Employment history: University of Hawaii at Manoa 1991-1994, Amoco 1994-1998, BP Amoco 1999- Author's name: Samuel H Gray Title and company affiliation: when we wrote it we were Amoco Address: 912 49th Ave SW, Calgary, AB T2S 1H2, Canada E-mail: shgray@hotmail.com Employment history: US Naval Research Lab, General Motors Institute, Amoco, unknown at this time Author's name: Gary Murphy Title and company affiliation: when we wrote it we were Amoco Author's name: John Etgen Title and company affiliation: Senior Research Associate, BP Amoco Address: Amoco TTC 2A19, PO Box 3385, Tulsa, OK, 74102, USA E-mail: jetgen@amoco.com Employment history: Amoco 1990-1998, BP Amoco 1999- Name: Tong Fei Title: Research Scientist Company: Los Alamos National Lab 1994-1996, Amoco 1996-1998, BP Amoco 1999- Address: PO Box 3092, Houston, TX 77253, USA e-mail: tfei@amoco.com