@MISC{FUNCT_9.MIZ,
  AUTHOR = {Li, Bo and Men, Yanhong and Li, Dailu and Liang, Xiquan},
  TITLE = {Basic Properties of Periodic Functions},
  ACKNOWLEDGEMENT = {Thank you, Yatsuka Nakamura and Andrzej Trybulec.},
  DAY = {10},
  MONTH = {October},
  YEAR = {2009},
  SECTION1 = {Basic Properties of a Period of a Function},
  SECTION2 = {Some Examples},
  ADDRESS1 = {Department of Mathematics and Physics\\
           Qingdao University of Science and Technology\\China},
  ADDRESS2 = {Department of Mathematics and Physics\\
           Qingdao University of Science and Technology\\China},
  ADDRESS3 = {Department of Mathematics and Physics\\
           Qingdao University of Science and Technology\\China},
  ADDRESS4 = {Department of Mathematics and Physics\\
           Qingdao University of Science and Technology\\China},
  SUMMARY = {In this article we present definitions,
  basic properties and some examples of periodic functions according to
  \cite{Chuanzhang:1978}.}}

@BOOK{Chuanzhang:1978,
 AUTHOR={Chen, Chuanzhang},
 TITLE={Mathematical analysis},
 PUBLISHER={Higher Education Press, Beijing},
 YEAR=1978}



