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Hello, I have been teaching a part of a lecture on "Valuation Methods of Natural Resources" where I covered contingent valuation method. Students collected data using a double-bounded contingent valuation method questioning technique and we analysed them with a...
Dear "plm"-Package insiders, [I posted the following observation is April already but unfortunately I am not aware of any answers. With the hope that someone found an answer in the mean time, I ask again:] I realized the following...
Hello Giovanni, Hello Yves, Hello R-help-Readers, I re-run an old code of mine which uses the pgmm() function (and which used to work with an older versions) under plm version 1.2-4 and got the following...
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