Bosch, E 1,2-Naphthoquinone-2-thiosemicarbazone as a new acid-base indicator in isopropyl and tert-butyl alcohol media. [electronic resource] - Talanta May 1988 - 419-23 p. digital Publication Type: Journal Article ISSN: 0039-9140 Standard No.: 10.1016/0039-9140(88)80039-0 doi