medium contributions to chemical chifts

  Dear CCL members,
 I need to evaluate different medium contributions
 into proton chemical shifts of liquid quinoline
 and its solutions. Could anybody kindly help me
 with good recent references?
 I mean papers after old Rummens's works.
 Thank you very much beforehand.
  Galina Lagodzinskaya
 Galina V. Lagodzinskaya, Ph.D.
 Institute of Chemical Physics
 in Chernogolovka RAS
 E-mail: gala' at \`