1.   Textbooks on research methods rarely mention the problems that arise when undertaking research on controversial topics or conducting it in sensitive locations.

2.   The overall DC cycle briefly mentioned the problem of not knowing exactly what modifications are needed to which modules when raising a DC.

3.   Although it does not specifically mention the problems, company sources confirmed that it was in reaction to operational difficulties.

4.   As for a possible Lewis-Tyson bout, Finkel mentioned another problem.

5.   A few weeks ago, I mentioned my problem to a friend who told me about Leo.

6.   But diaries belonging to two crew members also were recovered, and neither mentioned any problem with Hays during the flight.

7.   But in interviews with students, none mentioned any problems with the slower speed.

8.   Injury and a rowdy crowd had conspired against the Kings Sunday, not to mention foul problems.

9.   Karis mentioned problems with taking orders from the right person.

10.   Kemp also mentioned the problem of illegal immigration.