Hello, Four questions about serialization :=) Let's go. 1) I have a class that have a reference on a vector of shared pointers to objects . Since I have no default constructors I redefined save_construct_data like this : template<class Archive> inline void save_construct_data( Archive & ar, const MyClass<Real> * t, // CLASS IS TEMPLATED const unsigned int file_version) { ar << & t->myref_; } I have got the following error (same problem with & operator): error: no match for 'operator<<' in 'ar << [...] 2) I there a tricky way to define this function for all type used to instantiate MyClass ? 3) Is it me or this example in the documentation : // save data required to construct instance ar << t.member1; // serialize reference to object as a pointer ar << & t.member2; should be : ar << t->member1; ar << & t->member2; ? 4) Should it be possible to add more examples which use templates in the library (since a lot of a macros are not available) ? Thanks in advance for your help!