Philippe Pélissier
He competed at the 1964 Winter Olympics , placing 23rd , and at the 1968 Winter Olympics , placing 13th . 
<triplet> 1964 Winter Olympics <subj> 1964 <obj> point in time <subj> 1968 Winter Olympics <obj> followed by <triplet> 1968 Winter Olympics <subj> 1964 Winter Olympics <obj> follows <subj> 1968 <obj> point in time