Behre (1950), Bliss (1968)†, Cremonte et al. (2007)†, Eshky (1992)†, Fingerman (1970)†, Fingerman (1988)†, Giblock & Crain (2013)†, Hartnoll (1988)†, Jansen (1970)†, Klaassen & Ens (1993)†, Macintosh (1978)†, Montague (1980)†, Powers (1975)†, Powers (1977)†, Powers & Cole (1976)†, Rao (1985)†, Rosenberg (2013)†, Russell & Dierssen (2018)†, Shields et al. (2015)†, Smith & Miller (1973)†, Thurman (1979), Weis & Perlmutter (1987)†, Wilkens & Fingerman (1965), Wong et al. (1989), Zucker (1973)†
Entries marked with † represent indirect references to location through citation.