1. Second occurrence of makedonite, PbTiO3, Långban, Sweden;Burke;Lithos,1971
2. Exsolution in franklinite;Frondel;Am. Mineralogist,1965
3. Ludwigite from Ocna de Fer (Vaskö, Banat, Rumania);Koch;Acta Univ. Szeged, Acta Miner. Petrog.,1960
4. Ludwigite from Ocna de Fer (Vaskö, Banat, Rumania);Koch;Z. Mineral. I,1961
5. Långbans Malmtrakt;Magnusson;Sveriges geol. undersökning Avhandl., Ser. Ca, No. 23,1930