Creating a research questionnaire with repeating sections I am preparing the questionnaire for my Doctor of Business Administration research; for the purposes of this question (on Academia SE), I am investigating techniques used in customising cars. It is conceivable that a respondent has used several techniques, so I envisage repeating the same questions, each time for a a different car or technique. 

I imagine that the same repeating structure would be needed in a medical exam, where the respondent can give data about several complaints.

Is there a name for this technique? Does it have a canonical source?

I appreciate that this question might not be within the scope of this site.
This is a form of branching (I guess "conditional branching" based on a screening question).

A good model for this is the Bureau of Justic Statistics' National Crime Victimization Survey. In that survey, respondents are asked screening questions that identify incidents of crime victimization (e.g., respondent was attacked). Respondents are then asked to complete an "incident report", which asks an extensive number of questions about the episode of victimization. Here's an example of such an incident report for the 2012 survey. Respondents may complete zero of these incident reports or they complete up to ten.

Another, simpler, model is the U.S. Census (or most household surveys) that ask for basic details about household members. For example, the 2010 Census Form asked for details of up to 12 household members. In a telephone or online context, of course, respondents would not see the questions relating to household members beyond the number they initially list.