Yes: From the conclusion of the introduction,
"This leads to the question of whether Calvin's theology is not really non-sabbatarian, or his pratice is not, in fact, sabbatarian. To answer the question we look first at his practice, then at two key points in his Sabbath theology, the question of the Sabbath as a creation ordinance and Calvin's view of the change of the day observed from Saturday to Sunday." p. 4
And from the Summary and Conclusion of the article,
"If categorized in terms of the Sabbath debate that was to take place over the century following his death, Calvin's theology must be grouped with the sabbatarians. His doctrine of the Sabbath essentially meets Primus' standard, the 'two cardinal principles of Sabbatarian theology' Namely, for Calvin, like the Puritans, (1) 'the Sabbath command is rooted in the Creation order and is therefore moral and universal in scope,' and (2) 'the first day of the week and no other is especially sanctified by God as the Sabbath." p. 14.
Does he have info which states that Calvin believed that the Sabbath was changed from Sat to Sun?