TY  - BOOK
AU  - Shepherd W
AU  -  Zand P
TI  - Energy flow and power factor in nonsinusoidal circuits
U1  - D66,2, L9-;1 
PY  - 1979///
CY  - Cambridge
PB  - CUP       
KW  - Electrical engineering
N1  - Appendix 275p; Bibliography 276-278p
ER  -