Soggetti: “...Mathematics Study and teaching Periodicals....”
Available in Education Source.

Soggetti: “...Logic, Symbolic and mathematical....”
Full text available from Computer Science Database: 01/01/2011 to present
Full text available from East Europe, Central Europe Database: 01/01/2011 to present
Full text available from Engineering Database: 01/01/2011 to present
Full text available from Research Library: 01/01/2011 to present