− | The most common analyses done to determine molecular composition are as follows (see <ref name=pt05r1>Altgelt, K. W., Gouw, T. H., 1979, Chromatography in Petroleum Analysis: New York, Marcel Dekker.</ref>, and <ref name=pt05r154 />, for a description of these analyses and their applications): | + | The most common analyses done to determine molecular composition are as follows (see Altgelt and Gouw<ref name=pt05r1>Altgelt, K. W., Gouw, T. H., 1979, Chromatography in Petroleum Analysis: New York, Marcel Dekker.</ref> and Tissot and Weite<ref name=pt05r154 /> for a description of these analyses and their applications): |