The Basic Conflict Between Maharishi and Christianity 
1984 Pastoral statement of Cardinal Jaime Sin, Catholic Archbishop of Manila. Explains why Transcendental Meditation is unacceptable for Christians as a doctrine or a practice.
http://www.ewtn.com/library/NEWAGE/SINMAHAR.TXTFalling Down the TM Rabbit Hole 
Information and arguments recommending against involvement with Maharishi Mahesh Yogi or with any of his organizations.
http://www.suggestibility.org/
Meditation Information Network 
Supporting critical examination of the programs associated with Maharishi Mahesh Yogi.
http://minet.org/
Transcendental Meditation Information Pages 
Critical analysis of TM, from a Christian perspective.
http://www.amcbryan.btinternet.co.uk/tm-info/
The Skeptic's Dictionary: Transcendental Meditation (TM) 
Analyses this "spiritual business whose proprietors claims it is a program that is scientifically validated."
http://www.skepdic.com/tm.html