Yu Qing Chen (Yu-Qing Chen / Chen, Yu-Qing / Chen, Yu Qing)

• 
  Nonlinear Operator Theory In Abstract Spaces And Applications
  by Yu Qing Chen, Yeol Je Cho
  Hardcover, Nova Science Pub Inc, ISBN 1594540675 (1-59454-067-5)
• 
  Topological Degree Theory And Applications
  by Donal O'Regan, Yu Qing Chen
  Hardcover, Chapman & Hall, ISBN 158488648X (1-58488-648-X)