sentences:  They wrote to Stephen Timoshenko at Stanford University casually asking about working in the United States and in 1948, and both received offers to teach there.However, at the time Stanford held a university policy that husband and wife could not hold professional rank in the same department, and despite Flügge-Lotz's reputation in research, she had to accept the relatively minor position of "lecturer" as her husband became professor.Despite lacking of a professorial title, she immediately began accepting students for PhD dissertation research in aerodynamic theory, and in the spring of 1949, taught her first Stanford course in boundary layer theory.