Hrbacek, Karel

• Vol 2 (2010) - Articles
  Relative set theory: Some external issues
  Details  8. [PDF]
• Vol 4 (2012) - Articles
  Axiom of Choice in nonstandard set theory
  Details  8. [PDF]
• Vol 15 (2023) - Articles
  Peano and Osgood theorems via effective infinitesimals
  Abstract  6. [PDF]