J. P. Gapcynski

The lunar gravitational field as determined from the tracking data of the Lunar Orbiter series of spacecraft.

H. R. Compton, W. T. Blackshear, J. P. Gapcynski, 1968 .

A determination of the lunar moment of inertia

H. R. Compton, R. Tolson, W. Blackshear, 1975 .

Mars Gravity Field: Combined Viking and Mariner 9 Results

W. H. Michael, R. Tolson, J. P. Gapcynski, 1977 .

Results on the Mass and the Gravitational Field of the Moon as Determined from Dynamics of Lunar Satellites

W. H. Michael, J. P. Gapcynski, W. Blackshear, 1970 .

Lunar Gravitational Field as Determined from Lunar Orbiter Tracking Data

H. R. Compton, W. Blackshear, J. P. Gapcynski, 1969 .

An improved value of the lunar moment of inertia

W. Blackshear, J. P. Gapcynski, 1977 .