@article{karimullin_kalachev_naumov_sazonov_samartsev_2017, title={XI International Symposium on Photon Echo and Coherent Spectroscopy (PECS - 2017): preface}, volume={161}, DOI={10.1051/epjconf/201716100001}, publisher={EDP Sciences}, author={Karimullin and Kalachev and Naumov and Sazonov and Samartsev}, editor={Samartsev and Kalachev and Naumov and Gladush and Karimullin}, year={2017} }