sachs-1913/
sachs-1921/
sachs-1929/
sachs-1929a/
sachs-1929b/
sachs-1930/
sachs-1934/
sachs-1940/
saez-romero-and-guttierz-lopez-2003/
sandars-1912-13/
sankot-1991/
santos-velasco-1992/
santos-velasco-1996/
sarre-and-herzfield-1910/
scalise-sugiyama-2017/
schaeffer-1936/
schenk-1946/
schmidt-1915/
seewald-1934/
sendrey-1969/
shanks-2007/
sheteligh-and-johannessen-1929/
shoppa/
smirnov-1909/
smith-1866-7/
smith-1929/
smith-and-mercer-1974/
smith-et-al-2017/
smithers-1989/
solari-1931/
sopena-2005/
speiser-1935/
spiegelberg-1917/
spielberg-1922/
spivey-2005/
sprockhoff-1956/
stainer-1914/
starr-1895/
starr-1941/
stead-1998/
stevenson-1968/
strong-1926/
stuart-1819/
swadling-et-al-2006/
swadling-et-al-2009/
sweet-1987/