@misc{instantaneous+power+theory+and+applications+to+power+conditioning,
    author = {Akagi, Hirofumi i Watanabe, Edson Hirokazu i Aredes, Mauricio},
    title = {Instantaneous power theory and applications to power conditioning},
    address = {Piscataway i Hoboken},
    publisher = {IEEE Press i Wiley-Interscience},
    date = {2007}
}