In volume 35, issue 1 of Energy Sources, Part A: Recovery, Utilization, and Environmental Effects, incorrect references and text appeared in The Removal of Sulfur from Dursunbey and İskilip Lignites in Turkey, Using Natural Trona: 1. The Effect of the Thermal Method by H. Sütcü and Y. Eker, pages 83–91. The correct text is shown below.
In footnote 1 the URL should be replaced with:
Republic of Turkey Prime Ministry Undersecretariat of State Planning Organization, Mining Special Expertise Commission, Industrial Raw Materials Subcommittee, Chemical Industry Raw Materials Working Group Report: Boron Minerals, Trona, Sodium Sulfate, Strontium Minerals, Salt, Publication No:2414-ÖIK:474, Mayis:78–79.
In the references, Gözcelioğlu, B. 2004. Should be replaced with:
Gözcelioğlu, B. 2004. Natural soda trona. Scientific and Technical Review May:78–79 (in Turkish).