Gradient-Based
WATERGATE Scheme
Excitation Sculpting ( 96JMRA275-112 )
Difussion Differences (DRYCLEAN) ( 90JMR18-87 )
CHESS Scheme ( 01JMR168-152 )
WET Scheme ( 94JMRB1-104 , 95JMRA295-117 ), 05JB243-32 )
RAW Scheme ( 95JMRB260-107 )
MEGA Scheme ( 95JMRA226 )
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