− | Additional technical information on GC/MS techniques is available in Waples and Machihara.<ref name=ch08r59 />) and Peters and Moldowan<ref name=ch08r39>Peters, K., E., Moldowan, J., M., 1993, The Biomarker Guide—Interpreting [[Molecular fossils]] in Petroleum and Ancient Sediments: Englewood Cliffs, New Jersey, Prentice-Hall, 363 p.</ref> | + | Additional technical information on GC/MS techniques is available in Waples and Machihara<ref name=ch08r59 /> and Peters and Moldowan.<ref name=ch08r39>Peters, K., E., Moldowan, J., M., 1993, The Biomarker Guide—Interpreting [[Molecular fossils]] in Petroleum and Ancient Sediments: Englewood Cliffs, New Jersey, Prentice-Hall, 363 p.</ref> |