TY - RPRT TI - Magnetic monopoles from superstring models. AU - G Lazarides AU - C Panagiotakopoulos AU - Q Shafi PY - 1987 DO - 10.1103/physrevlett.58.1707 UR - https://pubmed.ncbi.nlm.nih.gov/10034514/ ID - 10034514 ER -