- The Music of the Primes: Why an Unsolved Problem in Mathematics Matters by Marcus du Sautoy, 2004-09-06
- UNSOLVED AND UNSOLVABLE PROBLEMS IN GEOMETRY by HERBERT MESCHKOWSKI, 1966
- Some unsolved social problems of a university town by Arthur Evans Wood, 2010-09-13
- Only Problems, not Solutions! by Florentin Smarandache, 2007-12-01
- Famous problems of mathematics;: Solved and unsolved mathematical problems, from antiquity to modern times by Heinrich Tietze, 1965
- Puerto Rico, unsolved problem, by Earl S. Garver ... [and] Ernest B. Fincher. With maps and drawings by John Morgan and William Schuhle by Earl Simeon Garver, 1945-01-01
- Unsolved Problems in Number Theory (Problem Books in Mathematics / Unsolved Problems in Intuitive Mathematics) by Richard Guy, 2010-11-02
- Research on Smarandache Unsolved Problems (in Chinese language), Vol. 5 (Chinese Edition) by editors Jianghua Li & Yanchun Guo, 2009-09-16
- Math Odyssey 2000: Puzzles, Mysteries, Unsolved Problems, Breakthroughs, and the People of Mathematics by Clement W. Falbo, 1994-01
- Unsolved Problems in Computer Science: P Versus Np Problem, Aanderaa-karp-rosenberg Conjecture
- Unsolved Problems in Physics: Accretion Disc, Ball Lightning, Magnetic Monopole, List of Unsolved Problems in Physics, Pioneer Anomaly
- The Three Unsolved Problems of Ancient Greece: An entry from Gale's <i>Science and Its Times</i> by Todd Timmons, 2001
- Famous Problems of Mathematics, Solved & Unsolved Problems From Antiquity to Modern Times, by Heinrich, Tietze, 1965
- Mark Ellis, or, Unsolved Problems by Will C. Whisner, 1899
|