@article{PismaZhETF.55.216, title = {Excitation of low-lying isomer level of the nucleus $^{229}Th$ by optical photons}, author = {Tkalya, E. V.}, journal = {πΙΣΨΝΑ Χ φότζ}, volume = {55}, issue = {4}, pages = {216}, year = {1992}, doi = {}, url = {http://jetpletters.ru/ps/0/article_19223.shtml}, }