TY - JOUR T1 - Low power energy harvesting systems: State of the art and future challenges JO - Renewable and Sustainable Energy Reviews UR - http://dx.doi.org/10.1016/j.rser.2021.111230 PY - 2021/09/01 AU - Calautit K AU - Nasir DSNM AU - Hughes BR ED - DO - DOI: 10.1016/j.rser.2021.111230 PB - Elsevier BV VL - 147 SP - 111230 EP - 111230 Y2 - 2025/05/21 ER -