Foundamental method\1-s2.0-S0955799712000215-main.pdf ...................\1-s2.0-S0955799712000264-main.pdf ...................\1-s2.0-S0955799712000434-main.pdf ...................\1-s2.0-S0955799712000471-main.pdf ...................\1-s2.0-S099775381200006X-main.pdf Foundamental method