@article{Linden_2010,<br/><span class="tab"></span> title={How Small Can Thermal Machines Be? The Smallest Possible Refrigerator},<br/><span class="tab"></span> volume={105},<br/><span class="tab"></span> ISSN={1079-7114},<br/><span class="tab"></span> url={http://dx.doi.org/10.1103/physrevlett.105.130401},<br/><span class="tab"></span> DOI={10.1103/physrevlett.105.130401},<br/><span class="tab"></span> number={13},<br/><span class="tab"></span> journal={Physical Review Letters},<br/><span class="tab"></span> publisher={American Physical Society (APS)},<br/><span class="tab"></span> author={Linden,<br/><span class="tab"></span> Noah and Popescu,<br/><span class="tab"></span> Sandu and Skrzypczyk,<br/><span class="tab"></span> Paul},<br/><span class="tab"></span> year={2010},<br/><span class="tab"></span> month=sep }