Since you are interested in Mstislav Rostropovich plays Cello Concertos, here is a list of other items that you may find interesting.
PYOTR ILYICH TCHAIKOVSKY
Tchaikovsky: Rococo Variations (with Dvorak - Cello Concerto)
Mstislav Rostropovich (cello) / Berlin Philharmonic Orchestra / Herbert von Karajan
[ Deutsche Grammophon The Originals / CD - released 1/Jan/2001 ]
"the intensity of lyrical feeling and the spontaneity of the partnership between Karajan and Rostropovich ensures the position of their disc at the top of recommendations for this peer among nineteenth century cello concertos." Rosette. Penguin...
MARBECKS COLLECTABLE - Strauss, (R,) - Don Quixote (with Schumann-Cello Concerto)
Mstislav Rostropovich (cello) / Berliner Philharmonic Orchestra / Herbert von Karajan
[ EMI Great Recordings of the Century / CD - released 28/Jan/2001 ]
1001 Classical recordings you must hear before you die (1851-1900) - "...a superb account of Strauss's masterpiece, earns the strongest recommendation for the virtuosity and eloquence of the performance and the remarkably vivid...
PROKOFIEV / RACHMANINOV
Piano Concerto No 3 / Piano Concerto No 3
Mikhail Pletnev, piano, Russian National Philharmonic Orchestra. Mstislav Rostropovich
[ Deutsche Grammophon / CD - released 24/Mar/2003 ]
This is not only Pletnev's first concerto CD on the Yellow Label, but also his first recording ever of Prokofiev 3rd.
Haydn: Cello Concertos 1 and 2
Mstislav Rostropovich (cello) / Academy St Martins in the Fields
[ Warner Classics Masters / CD - released 17/Mar/2000 ]
"A quite extraordinary achievement. Marvellously expressive cello playing. The orchestra gives splendid support and the sound is warm and ingratiating" (Gramophone)
Dvorak: Cello Concerto (with Tchaikovsky's Variations on a Rococo Theme)
Mstislav Rostropovich, cello / Boston Symphony Orchestra, Seiji Ozawa
[ Warner Classics The Erato Story / CD - released 10/Apr/2014 ]
Now reissued at a special price
VIVALDI / TARTINI / BOCCHERINI
Mstislav Rostropovich (cello) / Collegium Musicum Zurich / Paul Sacher
[ Deutsche Grammophon Grand Prix / CD - released 15/Feb/2007 ]
"Rostropovich turns each phrase to perfection…"the reading of the tragic slow movement (on Tartini) is deeply moving.." Stereo Review, New York