Local order property in nonelementary classes. - Rami P. Grossberg; Olivier Lessmann (Arch. Math. Log., 2000)

Ranks and pregeometries in finite diagrams. - Olivier Lessmann (Ann. Pure Appl. Log., 2000)

Amalgamation properties and finite models in Ln-theories. - John T. Baldwin 001; Olivier Lessmann (Arch. Math. Log., 2002)

A primer of simple theories. - Rami P. Grossberg; José Iovino; Olivier Lessmann (Arch. Math. Log., 2002)

Shelah's stability spectrum and homogeneity spectrum in finite diagrams. - Rami P. Grossberg; Olivier Lessmann (Arch. Math. Log., 2002)

A Rank for the Class of Elementary Submodels of A Superstable Homogeneous Model. - Tapani Hyttinen; Olivier Lessmann (J. Symb. Log., 2002)

Categoricity and U-rank in excellent classes. - Olivier Lessmann (J. Symb. Log., 2003)

Interpreting Groups and Fields in some Nonelementary Classes. - Tapani Hyttinen; Olivier Lessmann; Saharon Shelah (J. Math. Log., 2005)

Upward categoricity from a successor cardinal for tame abstract classes with amalgamation. - Olivier Lessmann (J. Symb. Log., 2005)

Uncountable categoricity of local abstract elementary classes with amalgamation. - John T. Baldwin 001; Olivier Lessmann (Ann. Pure Appl. Log., 2006)

Simplicity and uncountable categoricity in excellent classes. - Tapani Hyttinen; Olivier Lessmann (Ann. Pure Appl. Log., 2006)

Canonical bases in excellent classes. - Tapani Hyttinen; Olivier Lessmann (J. Symb. Log., 2008)

Analysis with Ultrasmall Numbers. - Karel Hrbacek; Olivier Lessmann; Richard O'Donovan (Am. Math. Mon., 2010)