Case 5; "Hsiang-yen: Up a Tree" - Commentary by John Tarrant Roshi. ftp://coombs.anu.edu.au/coombspapers/otherarchives/electronic-buddhist-archives/buddhism-zen/teachings/tarrant-john/tarrant-teisho-92-09-13.txt
Chao-chous Bowl-Washing - Commentary by Mui Barragato Sensei on Case #7 of the Mumonkan. www.dragoncliffzencenter.org/Chao.htm
Deshan Holds his Bowl - Commentary on Mumonkan (Gateless Gate) case 13 by Zoketsu Norman Fischer. www.everydayzen.org/edz/teachings/talk_mumonkan13.asp
Duk Sahn Carrying His Bowls - Commentary by Zen Master Seung Sahn on this koan from the Mu Mun Kwan, case number thirteen. www.kwanumzen.com/pzc/oldnewsletter/v06n05-1978-may-DSSN-DukSahnCarryingHisBowls.html
Who is Arguing About the Cat? - Moral action and enlightenment according to Dogen. 147.142.222.48/FULLTEXT/JR-PHIL/douglas.htm
Wu-Men Kuan Koans - Comprehensive and factual information about the Wu-Men Kuan (J. Mumonkan, E. Gateless Gate) koan collection as used in the Zen training. www.ciolek.com/WWWVLPages/ZenPages/Koans-WMK.html
Zuigen calls Master - Commentary by Mui Barragato Sensei on Case 12 of the Mumonkan. www.dragoncliffzencenter.org/Zuigen%20calls%20_Master_.htm
Gateless Gate, aka Mumonkon - The classic collection of koans usually used in introductory koan training. metalab.unc.edu/zen/cgi-bin/koan-index.pl